Minimal disturbance measurement for coherent states is non-Gaussian
arXiv:quant-ph/0510191 · doi:10.1103/PhysRevA.73.032335
Abstract
In standard coherent state teleportation with shared two-mode squeezed vacuum (TMSV) state there is a trade-off between the teleportation fidelity and the fidelity of estimation of the teleported state from results of the Bell measurement. Within the class of Gaussian operations this trade-off is optimal, i.e. there is not a Gaussian operation which would give for a given output fidelity a larger estimation fidelity. We show that this trade-off can be improved by up to 2.77% if we use a suitable non-Gaussian operation. This operation can be implemented by the standard teleportation protocol in which the shared TMSV state is replaced with a suitable non-Gaussian entangled state. We also demonstrate that this operation can be used to enhance the transmission fidelity of a certain noisy channel.
arXiv commentsubmitted to Physical Review A, new results added, 7 pages, 4 figures
References in corpus (22)
- Teleportation of Quantum States
- Multipartite entanglement for continuous variables: A quantum teleportation network
- Non-gaussian statistics from individual pulses of squeezed light
- Continuous-variable teleportation improvement by photon subtraction via conditional measurement
- Experimental investigation of continuous variable quantum teleportation
- Proposal for a loophole-free Bell test using homodyne detection
- The creation of large photon-number path entanglement conditioned on photodetection
- Quantum teleportation of light beams
- Teleportation improvement by inconclusive photon subtraction
- Proposed Test of Quantum Nonlocality for Continuous Variables
- Fidelity balance in quantum operations
- The optimal cloning of quantum coherent states is non-Gaussian
- Informationally complete measurements and groups representation
- Experimental realization of a minimal disturbance quantum measurement
- Fidelity trade-off for finite ensembles of identically prepared qubits
- Robertson Intelligent States
- Loophole-free test of quantum non-locality using high-efficiency homodyne detectors
- Degaussification of twin-beam and nonlocality in the phase space
- Separating the classical and quantum information via quantum cloning
- Experimental demonstration of coherent state estimation with minimal disturbance
- Information losses in continuous variable quantum teleportation
- Conditional generation of arbitrary multimode entangled states of light with linear optics
Cited by in corpus (12)
- Measuring Gaussian quantum information and correlations using the Renyi entropy of order 2
- Continuous-variable quantum teleportation with non-Gaussian entangled states generated via multiple-photon subtraction and addition
- Distillation of mixed-state continuous-variable entanglement by photon subtraction
- Measurement-induced disturbances and nonclassical correlations of Gaussian states
- Non-Gaussian operations on bosonic modes of light: Photon-added Gaussian channels
- Gaussian localizable entanglement
- Non-unity gain minimal disturbance measurement
- Optimal multicopy asymmetric Gaussian cloning of coherent states
- Improving information/disturbance and estimation/distortion trade-offs with non universal protocols
- Energy-constrained LOCC-assisted quantum capacity of bosonic dephasing channel
- Nondestructive verification of continuous-variable entanglement
- Scaling maps of -ordered quasiprobabilities are either nonpositive or completely positive