搜索结果: 1-7 共查到“量子光学 state”相关记录7条 . 查询时间(0.078 秒)
A simple scheme for realizing four-photon GHZ state based on cavity quantum electrodynamics
量子光学 GHZ态 阶梯型三能级原子 双模腔
2012/3/31
提出一种利用阶梯型三能级原子与两个双模腔谐振相互作用制备四光子GHZ态的方案。在该方案中，量子信息编码在腔场的虎克态中。通过求解薛定谔方程，得到相互作用系统的量子态。原子通过两个腔后被测量时，场能崩塌到所需要的GHZ态。结果表明该方案简单且实验上可行。
Fock-state view of weak-value measurements and implementation with photons and atomic ensembles
Fock-state view weak-value measurements implementation photons atomic ensembles
2010/11/5
Weak measurements in combination with post-selection can give rise to a striking amplification effect (related to a large "weak value"). We show that this effect can be understood by viewing the initi...
The log of a quantum state and qubit local unitary invariants
log quantum state qubit local unitary invariants
2010/10/19
Local unitary invariants of multipartite states fall into families related by the tracing-out of subsystems. In the case of pure qubit systems, there is a family that accounts for about half the total...
Distillation of mixed-state continuous-variable entanglement by photon subtraction
Distillation mixed-state continuous-variable entanglement photon subtraction
2010/10/21
We present a detailed theoretical analysis for the distillation of one copy of a mixed two-mode
continuous-variable entangled state using beamsplitters and coherent photon-detection techniques,includ...
Bidirectional Mapping between a Biphoton Polarization State and a Single-Photon Two-Qubit State
Bidirectional Mapping Biphoton Polarization State Single-Photon Two-Qubit State
2013/7/2
How to manipulate (operate or measure) single photons efficiently and simply is the basic problem in optical quantum information processing. We first present an efficient scheme to transform a biphoto...
Linear optical realization of unambiguous quantum state comparison
quantum state comparison linear optics quantum fingerprinting
2013/7/3
In this paper, we propose an experimental scheme for unambiguous quantum state comparison assisted by linear optical manipulations, twin-photons produced from parametric down-conversion, and postselec...
Quantum State Generation and Entanglement Manipulation Using Linear Optics
linear optics quantum state entanglement manipulation
2010/4/12
Quantum information processing (QIP) requires unitary operations, measurements and synthesis, manipulation and characterization of arbitrary quantum states. Linear optics provides efficient tools for ...