2007/04/30 by Zhang‐qi Yin, Zhang-qi Yin, Fuli Li +2
Computer Science · Engineering · Mathematics · Physics and Astronomy · #Algorithm #Computation #Computer science #Electrical engineering #Engineering #Field (mathematics) #Holonomic #Mathematics #Orbital Angular Momentum in Optics #Phase (matter) #Photonic and Optical Devices #Physics #Quantum #Quantum Information and Cryptography #Quantum computer #Quantum decoherence #Quantum gate #Quantum mechanics #Qubit #Topology (electrical circuits) #quant-ph
paper · pdf · doi:10.1103/physreva.76.062311
published as Phys. Rev. A 76, 062311 (2007) · 4 pages, 2 figures; v2, We have maken considerable changes. New model to engineer effective reservoir without broadband squeezing light is proposed, which makes the scheme more practical. Main results are not changed; v3, accepted for PRA. Change style to PRA
arxiv created 2007/11/02 · openalex publication_date 2007/12/18 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We consider an atom-field coupled system in which two pairs of four-level atoms are respectively driven by laser fields and trapped in two distant cavities that are connected by an optical fiber. First, we show that an effective squeezing reservoir can be engineered under appropriate conditions. Then, we show that a two-qubit geometric controlled-PHASE (CPHASE) gate between the atoms in the two cavities can be implemented through adiabatically manipulating the engineered reservoir along a closed loop. This scheme that combines an engineering environment with decoherence-free space and geometric phase quantum computation together has the following remarkable feature: a CPHASE gate with arbitrary phase shift is implemented by simply changing the strength and relative phase of the driving fields.