Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Laser Physics

Transmission of a mixed state via continuous-variable teleportation

Miguel Orszag, Jeronimo R. Maze

Published Jan 1, 2004• 0 citations
OpenAlex

Abstract

We optimize the transmission of quantum features in light fields, such as squeezing and antibunching, using continuous-variable teleportation and tuning the variable gain in Bob's output when Alice receives a mixed state. We study the degradation of the quadrature fluctuations, as well as of the second-order correlation function, due to the two-cat mixture.

Related papers

Perfect transmission of the sub-Poissonian character of a field via continuous-variable teleportation

Jerónimo Maze-Ríos, Miguel Orszag

We optimize the transmission of quantum features in light fields, such as squeezing and antibunching, using continuous variable teleportation and tuning the variable gain in Bob's output.

Journal of Modern Optics•Jul 27, 2004•1 citation

Optimized transmission of quantum properties in continuous teleportation

Jeronimo R. Maze, Miguel Orszag

The present work deals with how the quantum properties of a light beam are teleported, such as quadrature fluctuations and antibunching. We consider a variable gain at Bob’s end as well as the improvement of the teleportation process via a conditional measurement of one photon addition and substraction at the EPR source.

Journal of Optics B Quantum and Semiclassical Optics•May 29, 2004•3 citations

Continuous variable teleportation requires optical coherence

Terry Rudolph, Barry C. Sanders

Summary form only given. Quantum teleportation, first proposed as a method for teleporting an unknown spin-1/2 quantum state from a sender, "Alice", to a receiver, "Bob", has been extended to continuous-variable quantum teleportation (CVQT). In this variant of quantum teleportation, Bob and Alice share a nonlocal entangled two-mode field which, ideally, should have perfect correlations between in-phase quadrature ('position' x) and out-of-phase quadrature ('momentum' p), although the requirement of perfect correlations can be relaxed somewhat. The experimental success of CVQT has recently been reported, with two-mode squeezed light providing the nonlocal, entangled source shared between Alice and Bob. The objective here is to consider whether CVQT has indeed been achieved, or could ever be achieved, in optical experiments employing conventional laser sources. In particular we show that, in the context of this experiment, Alice and Bob may not employ independent laser sources for their operations if the state is to be teleported, yet this requires them to share more than just the Einstein-Podolsky-Rosen (EPR) resource.

Quantum Electronics and Laser Science Conference•Nov 13, 2002•0 citations

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

Fuli Li, Hongrong Li, Junxiang Zhang +1 more

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 variables [S. L. Braunstein and H. J. Kimble, Phys. Rev. Lett. 80, 869 (1998)], we investigate to what extent those nonclassical properties can be preserved in the teleported field. Explicit conditions of the squeezing parameter for the second- and fourth-order quadrature-phase squeezings, the squared amplitude squeezing, and the photon antibunching effect to survive in the teleported field are obtained.

Physical Review A•Aug 5, 2002•15 citations

Improving the fidelity of continuous—variable quantum teleportation by tuning displacement gain

刘金明, 李剑, 郭光灿

The fidelity of teleportation of continuous quantum variables can be improved by tuning the local displace-ment gain. We investigate the optimization of the fidelity for the teleportation of Schrodinger cat states,and of coherent states. It is found that the gain corresponding to the maximum fidelity is not equal to onefor the two input states in the case of the small squeezing degree of the entanglement resource, while unitydisplacement gain is the best choice for teleporting arbitrary quantum states in the case of large squeezing.

Chinese Optics Letters•Jan 1, 2003•0 citations

Optimizing the Fidelity of Teleporting a Single-Photon Number State

Ren Zhong-fu

Based on the scheme that continuous-variable quantum teleportation suggested by Braunstein and Kimble,by tuning the displacement gain in the transformation of the output field can optimize the fidelity of teleporting a single-photon number state employing two-mode squeezed vacuum state for entangled channel.

Acta Sinica Quantum Optica•Jan 1, 2012•0 citations
We optimize the transmission of quantum features in light fields, such as squeezing and antibunching, using continuous-variable teleportation and tuning the variable gain in Bob's output when Alice receives a mixed state. We study the degradation of the quadrature fluctuations, as well as of the second-order correlation function, due to the two-cat mixture.
Summary form only given. Quantum teleportation, first proposed as a method for teleporting an unknown spin-1/2 quantum state from a sender, "Alice", to a receiver, "Bob", has been extended to continuous-variable quantum teleportation (CVQT). In this variant of quantum teleportation, Bob and Alice share a nonlocal entangled two-mode field which, ideally, should have perfect correlations between in-phase quadrature ('position' x) and out-of-phase quadrature ('momentum' p), although the requirement of perfect correlations can be relaxed somewhat. The experimental success of CVQT has recently been reported, with two-mode squeezed light providing the nonlocal, entangled source shared between Alice and Bob. The objective here is to consider whether CVQT has indeed been achieved, or could ever be achieved, in optical experiments employing conventional laser sources. In particular we show that, in the context of this experiment, Alice and Bob may not employ independent laser sources for their operations if the state is to be teleported, yet this requires them to share more than just the Einstein-Podolsky-Rosen (EPR) resource.
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 variables [S. L. Braunstein and H. J. Kimble, Phys. Rev. Lett. 80, 869 (1998)], we investigate to what extent those nonclassical properties can be preserved in the teleported field. Explicit conditions of the squeezing parameter for the second- and fourth-order quadrature-phase squeezings, the squared amplitude squeezing, and the photon antibunching effect to survive in the teleported field are obtained.
The fidelity of teleportation of continuous quantum variables can be improved by tuning the local displace-ment gain. We investigate the optimization of the fidelity for the teleportation of Schrodinger cat states,and of coherent states. It is found that the gain corresponding to the maximum fidelity is not equal to onefor the two input states in the case of the small squeezing degree of the entanglement resource, while unitydisplacement gain is the best choice for teleporting arbitrary quantum states in the case of large squeezing.