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6 papers · 2 filters
Experimental implementation of high-fidelity unconventional geometric quantum gates using NMR interferometer
J. Du, P. Zou, Z. D. Wang
Following a key idea of unconventional geometric quantum computation developed earlier [Phys. Rev. Lett. 91, 197902 (2003)], here we propose a more general scheme in such an intrig…
Speedup of quantum state transfer by three- qubit interactions: Implementation by nuclear magnetic resonance
Jingfu Zhang, Xinhua Peng, Dieter Suter
Universal quantum information processing requires single-qubit rotations and two-qubit interactions as minimal resources. A possible step beyond this minimal scheme is the use of t…
The Application of Asymmetric Entangled States in Quantum Game
Ye Li, Gan Qin, Jiangfeng Du
In the present letter, we propose a more general entangling operator to the quantization of Cournot economic model, in which players can access to a continuous set of strategies. B…
Optimal quantum cloning via spin networks
Qing Chen, Jianhua Cheng, Ke-Lin Wang +1
In this paper we present an approach to quantum cloning via free dynamical evolution of spin networks. By properly designing the network and the couplings between spins, we show th…
Quantification of complementarity in multi-qubit systems
Xinhua Peng, Xiwen Zhu, Dieter Suter +3
Complementarity was originally introduced as a qualitative concept for the discussion of properties of quantum mechanical objects that are classically incompatible. More recently,…
Spin Chains as Perfect Quantum State Mirrors
Peter Karbach, Joachim Stolze
Quantum information transfer is an important part of quantum information processing. Several proposals for quantum information transfer along linear arrays of nearest-neighbor coup…