Oh Choo Hiap
Emeritus Professor/ CQT Fellow
S15-04-19B
phyohch@nus.edu.sg
65168491
Oh Choo Hiap

Short bio

Oh Choo Hiap obtained his BSc (First Class Hons) and PhD in physics in 1969 and 1972, respectively, from the University of Otago, New Zealand. For his PhD, he studied high energy physics, which relates to the study of the smallest constituents of matter. Choo Hiap has been with NUS since 1983, serving as Head of the Physics Department from 2000 to 2006. During this time he recruited various researchers in the field of quantum information, laying the foundation for CQT, of which he is a founding member.  His recent research is mainly on the fundamentals of quantum information science and the multiparticle phenomenology; he is a Fellow od American Physical Society. He was awarded an Emeritus Professorship by NUS in 2016.

Preprints

  • X. Lu, S.X. Yu, C.H. Oh. Robust Quantum Metrological Schemes .
  • X. Lu, S.X. Yu, K. Fujikawa, C.H. Oh. Improved Error-Tradeoff and Error-Disturbance Relations .
  • S.X. Yu, C.H. Oh. Optimal joint measurement of two observables of a qubit .
  • S.X. Yu, C.H. Oh. Quantum contextuality and joint measurement of three observables of a qubit .
  • F. Mei, Chuan-Jia Shan, Xun-Li Feng, Shi-Liang Zhu, Zhi-Ming Zhang, L.C. Kwek, D. Wilkowski, C.H. Oh. Creation, manipulation and detection of Majorana fermions with cold atoms in optical lattice.

Publications

  • Xin-Wen Wang, S.X. Yu, Deng-Yu Zhang, C.H. Oh. (2016). Effect of weak measurement on entanglement distribution over noisy channels. Scientific Reports 6 22408
  • Ji-Fang Li, Jin-Ming Liu, Xin-Li Feng, C.H. Oh. (2016). Deterministic remote two-qubit state preparation in dissipative environments. Quantum Information Processing 15 2155-2168
  • Kazuo Fujikawa, C.H. Oh, Koichiro Umetsu, S.X. Yu. (2016). Separability criteria with angular and Hilbert space averages. Ann. Phys. 368 248-257
  • Li Dong, Yan-Fang Lin, Jun-Xi Wang, Qing-Yang Li, Hong-Zhi Shen, Hai-Kuan Dong, Yuan-Peng Ren, Xiao-Ming Xiu, Ya-Jun Gao, C.H. Oh. (2016). Nearly deterministic Fredkin gate based on weak cross-Kerr nonlinearities. J. Opt. Soc. Am. B 33 253
  • , Li Dong, Jun-Xi Wang, Qing-Yang Li, Hong-Zhi Shen, Hai-Kuan Dong, Xiao-Ming Xiu, Ya-Jun Gao, C.H. Oh. (2016). Nearly deterministic preparation of the perfect W state with weak cross-Kerr nonlinearities. Phys. Rev. A 93 012308
  • C.J. Zhang, S.X. Yu, Q. Chen, H D Yuan, C.H. Lai, C.H. Oh. (2015). Complete condition for nonzero quantum correlation in continuous variable systems. New J. Phys. 17 09307
  • S.X. Yu, Q. Chen, C.H. Oh. (2015). Two infinite families of nonadditive quantum error-correcting codes. IEEE Transactions on Information Theory 61 7012-7016
  • Yang, Wan-li, An, Jun-Hong, Zhang, Cheng-jie, Chen, Chang-yong, C.H. Oh. (2015). Dynamics of quantum correlation between separated nitrogen-vacancy centers embedded in plasmonic waveguide. Scientific Reports 5 015513
  • Tian, Guojing, Yu, Sixia, Gao, Fei, Wen, Qiaoyan, C.H. Oh. (2015). Local discrimination of qudit lattice states via commutativity. Phys. Rev. A 92 042320
  • Chong Chen, Jun-Hong An, Hong-Gang Luo, C. P. Sun, C.H. Oh. (2015). Floquet control of quantum dissipation in spin chains. Phys. Rev. A 91 052122
  • , Guojing Tian, S.X. Yu, Fei Gao, Qiaoyan Wen, C.H. Oh. (2015). Local discrimination of four or more maximally entangled states. Phys. Rev. A 91 052314
  • J. You, Xq.Shao, Q.J. Tong, A. H. Chan, C.H. Oh, V. Vedral. (2015). Majorana transport in superconducting nanowire with Rashba and Dresselhaus spin-orbit couplings. J. Phys.: Condens. Matter 27 225302
  • X. Lu, S.X. Yu, C.H. Oh. (2015). Robust quantum metrological schemes based on protection of quantum Fisher information. Nature Communications 6 7282
  • Kazuo Fujikawa, C.H. Oh, S.X. Yu. (2015). Hardy’s paradox and measurement-disturbance relations. Phys. Rev. A 91 012105
  • Xq.Shao, J. You, T Y Zheng, C.H. Oh. (2014). Long range universal quantum computation in large-size coupled cavity array independent of cavity number. Laser Physics 11 105203
  • Z. Wang, S.X. Yu, H Fan, C.H. Oh. (2014). Quantum error correction assisted by two-way noisy communication. Nature Scientific Reports 4 7203
  • J. You, W. Yang, Z Y Xu, A H Chan, C.H. Oh. (2014). Phase transition of light in circuit-QED lattices coupled to nitrogen-vacancy centers in diamond. Phys. Rev. B 90 195112
  • X. Lu, S.X. Yu, Kazuo Fujikawa, C.H. Oh. (2014). Improved error-tradeoff and error-disturbance relations in terms of measurement error components. Phys. Rev. A 90 042113
  • C J Yang, J H An, H G Luo, Y Li, C.H. Oh. (2014). Canonical versus noncanonical equilibration dynamics of open quantum systems. Phys. Rev. E 90 022122
  • Kazuo Fujikawa, C.H. Oh, C.J. Zhang. (2014). Spin operator and entanglement in quantum field theory. Phys. Rev. D 90 025028
  • J. You, A. H. Chan, C.H. Oh, V. Vedral. (2014). Topological quantum phase transitions in the spin-singlet superconductor with Rashba and Dresselhaus (110) spin-orbit couplings. Ann. Phys. 349 189
  • Q.J. Tong, J. H. An, L.C. Kwek, H. G. Luo, C.H. Oh. (2014). Simulating Zeno physics by a quantum quench with superconducting circuits. Phys. Rev. A (R) 89 060101(R)
  • Xq.Shao, T. Y. Zheng, C.H. Oh, S. Zhang. (2014). One-step achievement of robust multipartite Greenberger–Horne–Zeilinger state and controlled-phase gate via Rydberg interaction. J. Opt. Soc. Am. B 31 827
  • Xq.Shao, J. You, T. Y. Zheng, C.H. Oh, S. Zhang. (2014). Stationary three-dimensional entanglement via dissipative Rydberg pumping. Phys. Rev. A 89 052313
  • Q. Chen, S.X. Yu, C.J. Zhang, C.H. Lai, C.H. Oh. (2014). Test of Genuine Multipartite Nonlocality without Inequalities. Phys. Rev. Lett. 112 140404
  • Y Y Chen, X.L. Feng, C.H. Oh. (2014). Quantum computation in the decoherence-free subspaces with cavity QED. Quantum Information Processing 13 547-557
  • Xq.Shao, T Y Zheng, X.L. Feng, C.H. Oh, S Zhang. (2014). One-step implementation of the genuine Fredkin gate in high-Q coupled three-cavity arrays. J. Opt. Soc. Am. B 31 697-703
  • H Z Shen, X. Yi, C.H. Oh. (2014). Dynamical signature of the edge state in the 1D Aubry–André model. J. Phys. B: At. Mol. Opt. Phys. 47 085501
  • C.F. Wu, J. Chen, X. Ye, H. Su, D.L. Deng, Z H Wang, C.H. Oh. (2014). Test of Einstein-Podolsky-Rosen Steering Based on the All-Versus-Nothing Proof. Scientific Reports 4 4291
  • Kazuo Fujikawa, C.H. Oh, C.J. Zhang. (2014). Linearity of quantum probability measure and Hardy. Int. J. Mod. Phys. B 29 1450017
  • Xq.Shao, T Y Zheng, C.H. Oh, S Zhang. (2014). Dissipative creation of three-dimensional entangled state in optical cavity via spontaneous emission. Phys. Rev. A 89 012319
  • X.L. Feng, Y Xu, C.H. Oh. (2014). Cavity quantum electrodynamics with rapidly vibrating atom. Laser Physics Letters 11 025204
  • C.J. Zhang, S.X. Yu, Q. Chen, C.H. Oh. (2013). Detecting and Estimating Continuous-Variable Entanglement by Local Orthogonal Observables. Phys. Rev. Lett. 111 190501
  • Z. Wang, S.X. Yu, Heng Fan, C.H. Oh. (2013). Quantum Error-Correcting Codes over Mixed Alphabets. Phys. Rev. A 88 022328
  • H. Su, J. Chen, C.F. Wu, D.L. Deng, C.H. Oh. (2013). Testing Leggett\'s Inequality Using Aharonov-Casher Effect. Scientific Reports 3 2492
  • Q. Zhang, J B Gong, C.H. Oh. (2013). Synthetic Spin-Orbit Coupling in Two-Level Cold Atoms. Ch. Phys. Lett. 30 080301
  • X. Yi, X Y Zhang, C.H. Oh. (2013). Effect of complex inter-site couplings on the excitation energy transfer in the FMO complex. Eur. Phys. J. D 67 172
  • Y Q Lü, J H An, X M Chen, H G Luo, C.H. Oh. (2013). Frozen Gaussian quantum discord in photonic crystal cavity array system. Phys. Rev. A 88 012129
  • H. Su, J. Chen, C.F. Wu, D.L. Deng, C.H. Oh. (2013). Detecting Einstein-Podolsky-Rosen Steering for Continuous Variable Wavefunctions. Int. J. Quant. Info. 11 1350019
  • J. Chen, X. Ye, C.F. Wu, H. Su, A Cabello, L.C. Kwek, C.H. Oh. (2013). All-Versus-Nothing Proof of Einstein-Podolsky-Rosen Steering. Scientific Reports 3 2143
  • , H B Liu, J H An, C Chen, Q.J. Tong, H G Luo, C.H. Oh. (2013). Anomalous decoherence in a dissipative two-level system. Phys. Rev. A 87 052139
  • Q.J. Tong, J H An, J B Gong, H G Luo, C.H. Oh. (2013). Generating many Majorana modes via periodic driving: A superconductor model. Phys. Rev. B 87 201109(R)
  • X. Lu, Zhe Sun, Xiaoguang Wang, Shunlong Luo, C.H. Oh. (2013). Broadcasting quantum Fisher information. Phys. Rev. A (R) 87 050302
  • S.X. Yu, J Bierbrauer, Y Dong, Q. Chen, C.H. Oh. (2013). All the stabilizer codes of distance 3. IEEE Transactions on Information Theory 59 5179-5185
  • Q. Zhang, J B Gong, C.H. Oh. (2013). Intrinsic dynamical fluctuation assisted symmetry breaking in adiabatic following. Phys. Rev. Lett. 110 130402
  • W. Tang, S.X. Yu, C.H. Oh. (2013). Greenberger-Horne-Zeilinger paradoxes from qudit graph states. Phys. Rev. Lett. 110 100403
  • J. You, C.H. Oh, V. Vedral. (2013). Majorana fermions in s-wave noncentrosymmetric superconductor with Dresselhaus (110) spin-orbit coupling. Phys. Rev. B 87 054501
  • W. Yang, J H An, C.J. Zhang, M Feng, C.H. Oh. (2013). Preservation of quantum correlation between separated nitrogen-vacancy centers embedded in photonic crystal cavities. Phys. Rev. A 87 022312
  • J. Chen, H. Su, C.F. Wu, D.L. Deng, A Cabello, L.C. Kwek, C.H. Oh. (2013). Quantum contextuality for a relativistic spin-1/2 particle. Phys. Rev. A 87 022109
  • D.L. Deng, C.F. Wu, J. Chen, S J Gu, S.X. Yu, C.H. Oh. (2012). Bell nonlocality in conventional and topological quantum phase transitions. Phys. Rev. A 86 032305
  • S.X. Yu, Q. Chen, C.J. Zhang, C.H. Lai, C.H. Oh. (2012). All Entangled Pure States Violate a Single Bell\'s Inequality. Phys. Rev. Lett. 109 120402
  • Y Y Chen, X.L. Feng, C.H. Oh. (2012). Geometric entangling gates for coupled cavity system in decoherence-free subspaces. Optics Comm. 285 5554
  • X. Lu, S L Luo, C.H. Oh. (2012). Hierarchy of measurement-induced Fisher information for composite states. Phys. Rev. A 86 022342
  • , S C Hou, X. Yi, S.X. Yu, C.H. Oh. (2012). Singularity of dynamical maps. Phys. Rev. A 86 012101
  • H. Su, J. Chen, C.F. Wu, S.X. Yu, C.H. Oh. (2012). Quantum contextuality in a one-dimensional quantum harmonic oscillator. Phys. Rev. A 85 052126
  • W. Yang, Z Q Yin, Z X Chen, S P Kou, M Feng, C.H. Oh. (2012). Quantum simulation of an artificial Abelian gauge field using nitrogen-vacancy-center ensembles coupled to superconducting resonators. Phys. Rev. A 86 012307
  • H Guo, J M Liu, C.J. Zhang, C.H. Oh. (2012). Quantum discord of a three-qubit W-class state in noisy environments. Quantum Information and Computation 12 0677
  • B Cui, X. Yi, C.H. Oh. (2012). Excitation energy transfer in light-harvesting systems: effect of the initial state. J. Phys. B: At. Mol. Opt. Phys. 45 085501
  • H. Sun, S L Fan, X.L. Feng, C.F. Wu, S Q Gong, G X Huang, C.H. Oh. (2012). Strongly interacting photons in asymmetric quantum well via resonant tunneling. Optics Express 20 8485
  • S L Luo, S S Fu, C.H. Oh. (2012). Quantifying correlations via the Wigner-Yanase skew information. Phys. Rev. A 85 032117
  • , W Fan, Y Xu, B Chen, Z Y Chen, X.L. Feng, C.H. Oh. (2012). Quantum phase transition of two-mode Bose-Einstein condensates with an entanglement order parameter. Phys. Rev. A 85 013645
  • F. Mei, S L Zhu, Z M Zhang, C.H. Oh, N Goldman. (2012). Simulating Z2 topological insulators with cold atoms in a one-dimensional optical lattice. Phys. Rev. A 85 013638
  • S.X. Yu, C.H. Oh. (2012). State-Independent Proof of Kochen-Specker Theorem with 13 Rays. Phys. Rev. Lett. 108 030402
  • Q. Zhang, J B Gong, C.H. Oh. (2012). Dynamical fluctuations in classical adiabatic processes: General description and their implications. Ann. Phys. 327 1202-1213
  • Q.J. Tong, J H An, H G Luo, C.H. Oh. (2011). Quantum phase transition in the delocalized regime of the spin-boson model. Phys. Rev. B 84 174301
  • C.J. Zhang, S.X. Yu, Q. Chen, C.H. Oh. (2011). Observable estimation of entanglement of formation and quantum discord for bipartite mixed quantum states. Phys. Rev. A 84 052112
  • W. Yang, Z Q Yin, Z Y Xu, M Feng, C.H. Oh. (2011). Quantum dynamics and quantum state transfer between separated nitrogen-vacancy centers embedded in photonic crystal cavities. Phys. Rev. A 84 043849
  • C.J. Zhang, S.X. Yu, Q. Chen, C.H. Oh. (2011). Detecting the quantum discord of an unknown state by a single observable. Phys. Rev. A 84 032122
  • X. Yi, S L Wu, C.F. Wu, X.L. Feng, C.H. Oh. (2011). Time-delay effects and simplified control fields in quantum Lyapunov control. J. Phys. B: At. Mol. Opt. Phys. 44 195503
  • X. Yi, B Cui, C.F. Wu, C.H. Oh. (2011). Effects of uncertainties and errors on a Lyapunov control. J. Phys. B: At. Mol. Opt. Phys. 44 165503
  • Q. Chen, C.J. Zhang, S.X. Yu, X. Yi, C.H. Oh. (2011). Quantum discord of two-qubit X-states . Phys. Rev. A 84 042313
  • Q.J. Tong, J H An, H G Luo, C.H. Oh. (2011). Entanglement distribution over the subsystems and its invariance. Quantum Information and Computation 11 0874
  • Q. Zhang, J B Gong, C.H. Oh. (2011). Converting zitterbewegung oscillation to directed motion. Europhys. Lett. 96 10004
  • F. Mei, S L Zhu, X.L. Feng, Z M Zhang, C.H. Oh. (2011). Probing half-odd topological number with cold atoms in a non-Abelian optical lattice. Phys. Rev. A 84 023622
  • S C Hou, X. Yi, S.X. Yu, C.H. Oh. (2011). Alternative non-Markovianity measure by divisibility of dynamical maps. Phys. Rev. A 83 062115
  • J. Huang, C.H. Oh, L F Wei. (2011). Testing tripartite Mermin inequalities by spectral joint measurements of qubits. Phys. Rev. A 83 062108
  • J. Chen, D.L. Deng, H. Su, C.F. Wu, C.H. Oh. (2011). Detecting full N-particle entanglement in arbitrarily-high-dimensional systems with Bell-type inequalities. Phys. Rev. A 83 022316
  • J. Huang, L F Wei, C.H. Oh. (2011). High ef?ciency tomographic reconstruction of quantum states by quantum nondemolition measurements. Phys. Rev. A 83 032110
  • , X. Hu, C.H. Oh. (2011). Transparency or spectral narrowing for two-mode squeezing and entanglement. Phys. Rev. A 83 053842
  • X.L. Zhang, X.L. Feng, C.F. Wu, C.H. Oh. (2010). Geometric phase gate with trapped ions in thermal motion by adiabatic passage. Eur. Phys. J. D 60 411-415
  • Q.J. Tong, J.H. An, H.G. Luo, C.H. Oh. (2010). Mechanism of entanglement preservation. Phys. Rev. A 81 052330
  • Z.H. Wei, Y.-J. Han, C.H. Oh, L.-M. Duan. (2010). Improving noise threshold for optical quantum computing with the EPR photon source. Phys. Rev. A 81 060301
  • S.X. Yu, N. Liu, L. Li, C.H. Oh. (2010). Joint measurement of two unsharp observables of a qubit. Phys. Rev. A 81 062116
  • Q. Zhang, J.B. Gong, C.H. Oh. (2010). Control of tripod-scheme cold-atom wavepackets by manipulating a non-Abelian vector potential. Ann. Phys. 325 1219-1234
  • , Q.J. Tong, J.H. An, H.G. Luo, C.H. Oh. (2010). Decoherence suppression of a dissipative qubit by the non-Markovian effect. J. Phys. B: At. Mol. Opt. Phys. 43 155501
  • D.L. Deng, C.F. Wu, J.L. Chen, C.H. Oh. (2010). Fault-Tolerant Greenberger-Horne-Zeilinger Paradox Based on Non-Abelian Anyons. Phys. Rev. Lett. 105 060402
  • S.J. Xiong, Y. Xiong, C.H. Oh. (2010). Entangling gates for local spin qubits by using electric current. Phys. Rev. A 82 032309
  • Y. Yeo, J.H. An, C.H. Oh. (2010). Non-Markovian effects on quantum-communication protocols. Phys. Rev. A 82 032340
  • C.L. Ho, A.I. Solomon, C.H. Oh. (2010). Quantum entanglement, unitary braid representation and Temperley-Lieb algebra. Europhys. Lett. 92 30002
  • F. Mei, Y.F. Yu, X.L. Feng, Z.M. Zhang, C.H. Oh. (2010). Quantum entanglement distribution with hybrid parity gate. Phys. Rev. A 82 052315
  • , J. Shen, X.L. Huang, X. Yi, C.F. Wu, C.H. Oh. (2010). Dynamics of quantum-classical hybrid systems: Effect of matter-wave pressure. Phys. Rev. A 82 062107
  • J.J. Chen, J.H. An, Q.J. Tong, H.G. Luo, C.H. Oh. (2010). Non-Markovian effect on the geometric phase of a dissipative qubit. Phys. Rev. A 81 022120
  • Q. Zhang, J.B. Gong, C.H. Oh. (2010). Driven Dirac-like equation via mirror oscillation: Controlled cold-atom Zitterbewegung. Phys. Rev. A 81 023608
  • J.M. Liu, X.L. Feng, C.H. Oh. (2009). Remote preparation of a three-particle state via positive operator-valued measurement. J. Phys. B: At. Mol. Opt. Phys. 42 055508
  • J.H. An, Y. Yeo, W.M. Zhang, C.H. Oh. (2009). Entanglement oscillation and survival induced by non-Markovian decoherence dynamics of the entangled squeezed state. J. Phys. A: Math. Theor. 42 015302
  • X.L. Zhang, X.L. Feng, C.F. Wu, C.H. Oh. (2009). Nongeometric multiqubit conditional phase gates by adiabatic evolution for trapped ions. Phys. Rev. A 79 034301
  • X.J. Liu, X. Liu, L.C. Kwek, C.H. Oh. (2009). Fractional spin Hall effect in atomic Bose gases. Phys. Rev. B 79 165301
  • Q. Zhang, J.B. Gong, C.H. Oh. (2009). All-optical imprinting of geometric phases onto matter waves. Phys. Rev. A 79 043632
  • J.H. An, M. Feng, C.H. Oh. (2009). Quantum-information processing with a single photon by an input-output process with respect to low-Q cavities. Phys. Rev. A 79 032303
  • H. Sun, X.L. Feng, S.Q. Gong, C.H. Oh. (2009). Giant cross-Kerr nonlinearity in carbon nanotube quantum dots with spin-orbit coupling. Phys. Rev. B 79 193404
  • J.H. An, Y. Yeo, C.H. Oh. (2009). Exact decoherence dynamics of a single-mode optical field. Ann. Phys. 324 1737-1746
  • J.M. Liu, X.L. Feng, C.H. Oh. (2009). Remote preparation of arbitrary two- and three-qubit states. Europhys. Lett. 87 30006
  • X. Yi, X.L. Huang, C.F. Wu, C.H. Oh. (2009). Driving quantum systems into decoherence-free subspaces by Lyapunov control. Phys. Rev. A 80 052316
  • , J. Qian, Y. Qian, M. Ke, X.L. Feng, C.H. Oh, Y.Z. Wang. (2009). Breakdown of the dipole blockade with a zero-area phase-jump pulse. Phys. Rev. A 80 053413
  • H. Sun, X.L. Feng, C.F. Wu, J.M. Liu, S. Q. Gong, C.H. Oh. (2009). Optical rotation of heavy hole spins by non-Abelian geometrical means. Phys. Rev. B 80 235404
  • X.L. Feng, C.F. Wu, H. Sun, C.H. Oh. (2009). Geometric Entangling Gates in Decoherence-Free Subspaces with Minimal Requirements. Phys. Rev. Lett. 103 200501
  • X. J. Liu, L. Liu, L.C. Kwek, C.H. Oh. (2008). Manipulating atomic states via optical orbital angular-momentum. Front. Phys. China 3 113-125
  • X.J. Liu, L.C. Kwek, C.H. Oh. (2008). Quantum spin current induced through optical dipole transition process in semiconductors. Int. J. Mod. Phys. B 22 44-56
  • J.J. Song, B.A. Foreman, X.J. Liu, C.H. Oh. (2008). Wave function engineering and circulating spin current in trapped Bose-Einstein condensates. Europhys. Lett. 84 20012
  • , Z.S. Wang, C.F. Wu, X.L. Feng, L.C. Kwek, C.H. Lai, C.H. Oh, V. Vedral. (2008). Geometric phase induced by quantum nonlocality. Phys. Lett. A 372 775-778
  • D.M. Tong, X. Yi, X.J. Fan, L.C. Kwek, C.H. Oh. (2008). Examination of the adiabatic approximation in open systems. Phys. Lett. A 372 2364
  • J.L. Chen, C.F. Wu, L.C. Kwek, C.H. Oh. (2008). Bell inequalities for three particles. Phys. Rev. A 78 032107
  • S.X. Yu, Q. Chen, C.H. Lai, C.H. Oh. (2008). Nonadditive quantum error-correcting code. Phys. Rev. Lett. 101 090501
  • X.L. Feng, J. Qian, L.C. Kwek, C.H. Oh. (2008). Repeat-until-success distributed quantum computation by using single-photon interference at a beam splitter. Phys. Rev. A 78 012354
  • C.F. Wu, J.L. Chen, L.C. Kwek, C.H. Oh. (2008). Correlation-function Bell inequality with improved visibility for three qubits. Phys. Rev. A 77 062309
  • X.L. Feng, C.F. Wu, C.H. Lai, C.H. Oh. (2008). Universal quantum computation with trapped ions in thermal motion by adiabatic passage. Phys. Rev. A 77 062336
  • , D. Hu, W. Tang, M. Zhao, Q. Chen, S.X. Yu, C.H. Oh. (2008). Graphical nonbinary quantum error-correcting codes. Phys. Rev. A 78 012306
  • X.L. Huang, X. Yi, C.F. Wu, X.L. Feng, S.X. Yu, C.H. Oh. (2008). Effective Hamiltonian approach to open systems and its applications. Phys. Rev. A 78 062114
  • C.F. Wu, X.L. Feng, X. Yi, I.M. Chen, C.H. Oh. (2008). Quantum gate operations in the decoherence-free subspace of superconducting quantum-interference devices. Phys. Rev. A 78 062321
  • D.M. Tong, K. Singh, L.C. Kwek, C.H. Oh. (2007). Sufficiency Criterion for the Validity of the Adiabatic Approximation. Phys. Rev. Lett. 150402
  • C.F. Wu, Y. Yeo, L.C. Kwek, C.H. Oh. (2007). Quantum nonlocality of four-qubit entangled states. Phys. Rev. A 75 032332
  • X. Yi, D.M. Tong, L.C. Kwek, C.H. Oh. (2007). Adiabatic approximation in open systems: an alternative approach . J. Phys. B: At. Mol. Opt. Phys. 40 281-291
  • , Z.S. Wang, C.F. Wu, X.L. Feng, L.C. Kwek, C.H. Lai, C.H. Oh. (2007). Effects of a squeezed-vacuum reservoir on geometric phase. Phys. Rev. A 75 024102
  • X.L. Feng, Z.S. Wang, C.F. Wu, L.C. Kwek, C.H. Lai, C.H. Oh. (2007). Scheme for unconventional geometric quantum computation in cavity QED. Phys. Rev. A 75 052312
  • C.F. Wu, Z.S. Wang, X.L. Feng, H.S. Goan, L.C. Kwek, C.H. Oh. (2007). Unconventional geometric quantum computation in a two-mode cavity. Phys. Rev. A 76 024302
  • , Z.S. Wang, C.F. Wu, X.L. Feng, L.C. Kwek, C.H. Lai, C.H. Oh, V. Vedral. (2007). Nonadiabatic geometric quantum computation. Phys. Rev. A 76 044303
  • C.F. Wu, J. L. Chen, L.C. Kwek, C.H. Oh. (2006). Quantum nonlocality of N-qubit W state. Phys. Rev. A 73 012310
  • J. L. Chen, C.F. Wu, L.C. Kwek, C.H. Oh, M. L. Ge. (2006). Violating Bell inequalities maximally for two d-dimensional systems. Phys. Rev. A 74 032106
  • X. Yi, D.M. Tong, L.C. Wang, L.C. Kwek, C.H. Oh. (2006). Geometric phase in open systems: Beyond the Markov approximation and weak-coupling limit . Phys. Rev. A 73 052103
  • D.M. Tong, K. Singh, L.C. Kwek, C.H. Oh. (2005). Quantitative conditions do not guarantee the validity of the adiabatic approximation. Phys. Rev. Lett. 110407
  • C.F. Wu, J. L. Chen, L.C. Kwek, C.H. Oh, K. Xue. (2005). Continuous multipartite entangled state in the Wigner representation and violation of Zukowski-Brunker inequality. Phys. Rev. A 71 022110
  • , J. L. Chen, C.F. Wu, L.C. Kwek, D. Kaszlikowski, M. Zukowski, C.H. Oh. (2005). Multi-component Bell inequality and its violation for continuous-variable systems. Phys. Rev. A 71 032107
  • D.M. Tong, L.C. Kwek, C.H. Oh, J L Chen, L Ma. (2004). Operator-sum representation of time-dependent density operators . Phys. Rev. A 054102
  • D.M. Tong, E. Sjoqvist, S. Filipp, L.C. Kwek, C.H. Oh. (2004). Kinematic approach to off-diagonal geometric phases of nondegenerate and degenerate mixed . Phys. Rev. Lett. 080405
  • D. Gosal, D. Kaszlikowski, L.C. Kwek, M. Zukowski, C.H. Oh. (2004). Asymmetric multipartite Greenberger-Horne-Zeilinger states and Bell inequalities. Phys. Rev. A 70 042106
  • C.F. Wu, J. L. Chen, D.M. Tong, L.C. Kwek, C.H. Oh. (2004). Quantum nonlocality of Heisenberg XX model with site-dependent coupling strength. J. Phys. A: Math. Gen. 37 11475
  • J. L. Chen, C.F. Wu, L.C. Kwek, C.H. Oh. (2004). Gisin\'s theorem for three qubits. Phys. Rev. Lett. 93 140407
  • D.M. Tong, E. Sjoqvist, L.C. Kwek, C.H. Oh, M. Ericsson. (2003). Relation between the geometric phases of the entangled biparticle system and their subsystems. Phys. Rev. A 022106
  • D.M. Tong, J L Chen, L.C. Kwek, C.H. Lai, C.H. Oh. (2003). General formalism of Hamiltonians for realizing a prescribed evolution of a qubit . Phys. Rev. A 062307