Decoherence-free dynamical and geometrical entangling phase gates
arXiv:quant-ph/0309180 · doi:10.1103/PhysRevA.69.033817
Abstract
It is shown that entangling two-qubit phase gates for quantum computation with atoms inside a resonant optical cavity can be generated via common laser addressing, essentially, within one step. The obtained dynamical or geometrical phases are produced by an evolution that is robust against dissipation in form of spontaneous emission from the atoms and the cavity and demonstrates resilience against fluctuations of control parameters. This is achieved by using the setup introduced by Pachos and Walther [Phys. Rev. Lett. 89, 187903 (2002)] and employing entangling Raman- or STIRAP-like transitions that restrict the time evolution of the system onto stable ground states.
10 pages, 9 figures, REVTEX, Eq. (20) corrected
References in corpus (26)
- Decoherence Free Subspaces for Quantum Computation
- Noiseless Quantum Codes
- Holonomic Quantum Computation
- Quantum Computers and Dissipation
- Deterministic Single-Photon Source for Distributed Quantum Networking
- Quantum Computing Using Dissipation to Remain in a Decoherence-Free Subspace
- Matter-wave interferometer for large molecules
- Geometric phase in open systems
- Vacuum-Stimulated Raman Scattering based on Adiabatic Passage in a High-Finesse Optical Cavity
- Cavity QED with optically transported atoms
- Quantum computation with trapped ions in an optical cavity
- Measurement induced entanglement and quantum computation with atoms in optical cavities
- Holonomic quantum computation with neutral atoms
- Entangled state preparation via dissipation-assisted adiabatic passages
- Towards single-atom detection on a chip
- Decoherence of geometric phase gates
- Quantum Information Processing in Strongly Detuned Optical Cavities
- Driving Atoms Into Decoherence-Free States
- Quantum logic between atoms inside a high Q optical cavity
- A conditional quantum phase gate between two 3-state atoms
- Conditional Hamiltonian and Reset Operator in the Quantum Jump Approach
- Conditional linear-optical measurement schemes generate effective photon nonlinearities
- Quantum Computing in a Macroscopic Dark Period
- Universal quantum computation by holonomic and nonlocal gates with imperfections
- Ion-trap quantum computing in the presence of cooling
- Trapping atoms in the vacuum field of a cavity
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- Atomic quantum state transferring and swapping via quantum Zeno dynamics
- Quantum Control via Stimulated Raman User-defined Passage
- On geometric phases for quantum trajectories