Non-symmetric entanglement of atomic ensembles
arXiv:quant-ph/0401143 · doi:10.1103/PhysRevLett.92.030407
Abstract
The entanglement of multi-atom quantum states is considered. In order to cancel noise due to inhomogeneous light atom coupling, the concept of matched multi-atom observables is proposed. As a means to eliminate an important form of decoherence this idea should be of broad relevance for quantum information processing with atomic ensembles. The general approach is illustrated on the example of rotation angle measurement, and it is shown that the multi-atom states that were thought to be only weakly entangled can exhibit near-maximum entanglement.
to appear in Physical Review Letters
References in corpus (14)
- Long-distance quantum communication with atomic ensembles and linear optics
- Dark-State Polaritons in Electromagnetically Induced Transparency
- Experimental long-lived entanglement of two macroscopic objects
- Many-particle entanglement with Bose--Einstein condensates
- Generation of Nonclassical Photon Pairs for Scalable Quantum Communication with Atomic Ensembles
- State-Insensitive Cooling and Trapping of Single Atoms in an Optical Cavity
- Quantum communication between atomic ensembles using coherent light
- Atomic Quantum State Teleportation and Swapping
- Capture and release of a conditional state of a cavity QED system by quantum feedback
- Entangling atoms in bad cavities
- Entangling many atomic ensembles through laser manipulation
- Probabilistic generation of entanglement in optical cavities
- Decoherence of collective atomic spin states due to inhomogeneous coupling
- Entanglement of two atomic samples by quantum non-demolition measurements
Cited by in corpus (26)
- Quantum interface between light and atomic ensembles
- Quantum spin squeezing
- Storage and retrieval of single photons transmitted between remote quantum memories
- Quantum State Transfer Between Matter and Light
- Entanglement of remote atomic qubits
- Spin squeezing and precision probing with light and samples of atoms in the gaussian approximation
- Environment Assisted Precision Measurement
- Cavity-aided non-demolition measurements for atom counting and spin squeezing
- Spin squeezing of atomic ensembles by multi-colour quantum non-demolition measurements
- Protecting Spin Coherence in a Tunable Heisenberg Model
- Quantum interference of electromagnetic fields from remote quantum memories
- Entangled collective-spin states of atomic ensembles under non-uniform atom-light interaction
- Differential atom interferometry beyond the standard quantum limit
- Three-dimensional light-matter interface for collective spin squeezing in atomic ensembles
- Backaction noise produced via cavity-aided nondemolition measurement of an atomic clock state
- Imaginary time evolution with quantum nondemolition measurements: multi-qubit interactions via measurement nonlinearities
- Diffraction effects on light-atomic ensemble quantum interface
- Enhancing the capacity and performance of collective atomic quantum memory
- Faraday imaging induced squeezing of a double-well Bose-Einstein condensate
- Possibility of Inhomogeneous Coupling Leading to Decoherence in an Electromagnetically-Induced-Transparency Quantum-Memory Process
- Deterministic preparation of supersinglets with collective spin projections
- Single-cell atomic quantum memory for light
- Hybrid approximation approach to generation of atomic squeezing with quantum nondemolition measurements
- Entanglement properties in the Inhomogeneous Tavis-Cummings model
- Nuclear Spin Squeezing Based on Spin-Exchange Collisions
- Deterministic atom-light quantum interface