# Criteria for continuous-variable quantum teleportation

@article{Braunstein2000CriteriaFC, title={Criteria for continuous-variable quantum teleportation}, author={Samuel L. Braunstein and Christopher A. Fuchs and Harry J. Kimble}, journal={Journal of Modern Optics}, year={2000}, volume={47}, pages={267 - 278} }

Abstract We derive an experimentally testable criterion for the teleportation of quantum states of continuous variables. This criterion is especially relevant to the recent experiment of Furusawa et al. where an input—output fidelity of 0.58 ± 0.02 was achieved for optical coherent stages. Our derivation demonstrates that fidelities greater than 1/2 could not have been achieved through the use of a classical channel alone; quantum entanglement was a crucial ingredient in the experiment.

## 147 Citations

### Simple proof of the quantum benchmark fidelity for continuous-variable quantum devices

- Computer Science, Physics
- 2011

The present method enables us to produce a quantum-domain criterion associated with a given set of measured fidelities and presents an alternative proof of the classical limit based on the familiar notions of state-channel duality and partial transposition.

### QUANTUM TELEPORTATION WITH PAIR-COHERENT STATES

- Physics
- 2007

Recently, it has been argued that all presently performed continuous variable quantum teleportation experiments could be explained using a local hidden variable theory. In this paper, we study a…

### Continuous-variable quantum teleportation through bosonic memory channel

- PhysicsPhysica Scripta
- 2018

We put forward a scheme for quantum teleportation of continuous-variable Gaussian states using, as a quantum channel, a two-mode squeezed vacuum interacting with a thermal environment showing memory…

### Fidelity criterion for quantum-domain transmission and storage of coherent states beyond the unit-gain constraint.

- PhysicsPhysical review letters
- 2008

We generalize the experimental success criterion for quantum teleportation (memory) in continuous-variable quantum systems to be suitable for a non-unit-gain condition by considering attenuation…

### Quantum teleportation of light beams

- Physics
- 2003

We experimentally demonstrate quantum teleportation for continuous variables using squeezed-state entanglement. The teleportation fidelity for a real experimental system is calculated explicitly,…

### Probing the Quantumness of Channels with Mixed States

- Computer Science
- 2009

An alternative approach to the derivation of benchmarks for quantum channels, such as memory or teleportation channels, is presented, using the concept of effective entanglement and the verification thereof, which demands very few experimental resources.

### Nonclassical properties of teleported optical fields in quantum teleportation of continuous variables

- Physics
- 2002

When sending a quantum state which originally has nonclassical properties such as various kinds of squeezing and photon antibunching effects according to the protocol for teleportation of continuous…

### Quantum benchmark via an uncertainty product of canonical variables.

- PhysicsPhysical review letters
- 2015

An uncertainty-relation-type quantum benchmark for continuous-variable (CV) quantum channels that works with an input ensemble of Gaussian-distributed coherent states and homodyne measurements is presented that can verify the quantum-domain performance for all one-mode Gaussian channels.

### High-fidelity continuous-variable quantum teleportation toward multistep quantum operations

- Physics
- 2008

The progress in quantum operations of continuous-variable (CV) schemes can be reduced to that in CV quantum teleportation. The fidelity of quantum teleportation of an optical setup is limited by the…

### Quantum teleportation through atmospheric channels

- PhysicsPhysica Scripta
- 2019

We study the Kimble–Braunstein continuous-variable quantum teleportation with the quantum channel physically realized in the turbulent atmosphere. In this context, we examine the applicability of…

## References

SHOWING 1-10 OF 33 REFERENCES

### Teleportation of continuous quantum variables

- PhysicsTechnical Digest. Summaries of Papers Presented at the International Quantum Electronics Conference. Conference Edition. 1998 Technical Digest Series, Vol.7 (IEEE Cat. No.98CH36236)
- 1998

Summary form only given. A particularly startling discovery by Bennett et al. is the possibility for teleportation of a quantum state, whereby an unknown state of a spin-1/2 particle is transported…

### Unconditional quantum teleportation

- PhysicsScience
- 1998

The first realization of unconditional quantum teleportation where every state entering the device is actually teleported is realized, using squeezed-state entanglement.

### Experimental quantum teleportation

- PhysicsNature
- 1997

It is shown that during teleportation, one of a pair of entangled photons are subjected to a measurement such that the second photon of the entangled pair acquires the polarization of the initial photon.

### Experimental Realization of Teleporting an Unknown Pure Quantum State via Dual Classical and Einstein-Podolsky-Rosen Channels

- Physics
- 1998

We report on a quantum optical experimental implementation of teleportation of unknown pure quantum states. This realizes all of the nonlocal aspects of the original scheme proposed by Bennett et al.…

### Teleportation of quantum states.

- PhysicsPhysical review. A, Atomic, molecular, and optical physics
- 1994

The recent result of Bennett of teleportation of an unknown quantum state is obtained in the framework of nonlocal measurements proposed by Aharonov and Albert, and the latter method is generalized to the teleportation of a quantum state of a system with continuous variables.

### A posteriori teleportation

- PhysicsNature
- 1998

The article by Bouwmeester et al. on experimental quantum teleportation constitutes an important advance in the burgeoning field of quantum information. The experiment was motivated by the proposal…

### Characterizing teleportation in optics

- Physics
- 1999

We discuss the characterization of continuous variable, optical quantum teleportation in terms of the two-quadrature signal transfer and conditional variances between the input and output states. We…

### Complete quantum teleportation using nuclear magnetic resonance

- PhysicsNature
- 1998

Quantum-mechanical systems have information processing capabilities, that are not possible with classical devices. One example is quantum teleportation, in which the quantum state of a system is…

### Teleportation with Bright Squeezed Light

- Physics
- 1998

We examine the teleportation of continuous quantum variables from a small signal communication point of view. We show that mixed bright squeezed beams can provide the entanglement required for…

### Broadband teleportation

- Physics
- 1999

Quantum teleportation of an unknown broadband electromagnetic ﬁeld is investigated. The continuous-variable teleportation protocol by Braunstein and Kimble [Phys. Rev. Lett. 80 , 869 (1998)] for…