scholarly journals Continuous variable multimode quantum states via symmetric group velocity matching

2021 ◽  
Author(s):  
Victor Roman-Rodriguez ◽  
Benjamin Brecht ◽  
Srinivasan Kaali ◽  
Christine Silberhorn ◽  
Nicolas Treps ◽  
...  
Keyword(s):  
Symmetric Group ◽  
Group Velocity ◽  
Continuous Variable ◽  
Quantum States ◽  
Velocity Matching

Group velocity matching in type-III phase-matching geometry in BBO

2002 ◽  
Vol 211 (1-6) ◽  
pp. 319-322
Author(s):  
Dong-Qing Pang ◽  
Ruo-Bing Zhang ◽  
Jing Ma ◽  
Wei-Li Zhang ◽  
Qing-Yue Wang
Keyword(s):  
Group Velocity ◽  
Phase Matching ◽  
Type Iii ◽  
Velocity Matching

Quantum dialogue protocol with four-mode continuous variable GHZ state

2019 ◽  
Vol 33 (05) ◽  
pp. 1950033 ◽  
Author(s):  
Ming-Hui Zhang ◽  
Jin-Ye Peng ◽  
Zheng-Wen Cao
Keyword(s):  
Channel Capacity ◽  
Quantum Channel ◽  
Beam Splitter ◽  
Information Leakage ◽  
Continuous Variable ◽  
Ghz State ◽  
Quantum States ◽  
Quantum Dialogue ◽  
Discrete Variable ◽  
Secret Information

Quantum dialogue can realize the mutual transmission of secret information between two legal users. In most of the existing quantum dialogue protocols, the information carriers applied in quantum dialogue are discrete variable (DV) quantum states. However, there are certain limitations on the preparation and detection of DV quantum states with current techniques. Continuous variable (CV) quantum states can overcome these problems effectively while improving the quantum channel capacity. In this paper, we propose a quantum dialogue protocol with four-mode continuous variable GHZ state. Compared with the existing CV-based quantum dialogue protocols, the protocol allows two users to transmit two groups of secret information with different lengths to each other simultaneously. The channel capacity of the protocol has been improved as each traveling mode carries two- or four-bits of information. In addition, the protocol has been proved to be secure against information leakage problem and some common attacks, such as beam splitter attack and intercept-and-resend attack.

A method for efficiently estimating non-Gaussianity of continuous-variable quantum states

2020 ◽  
Vol 74 (1) ◽  
Author(s):  
Shao-Hua Xiang ◽  
Yu-Jing Zhao ◽  
Cheng Xiang ◽  
Wei Wen ◽  
Xue-Wen Long
Keyword(s):  
Continuous Variable ◽  
Quantum States

Broadband sum-frequency generation by chirp-assisted group-velocity matching

1996 ◽  
Vol 13 (7) ◽  
pp. 1431 ◽  
Author(s):  
Karoly Osvay ◽  
Ian N. Ross
Keyword(s):  
Group Velocity ◽  
Sum Frequency Generation ◽  
Sum Frequency ◽  
Frequency Generation ◽  
Velocity Matching

Frequency conversion of continuous variable quantum states

2008 ◽  
Vol 25 (2) ◽  
pp. 269
Author(s):  
Yongmin Li ◽  
Kuanshou Zhang
Keyword(s):  
Frequency Conversion ◽  
Continuous Variable ◽  
Quantum States

Phase and group velocity matching for second harmonic generation of femtosecond pulses

1990 ◽  
Vol 29 (27) ◽  
pp. 3927 ◽  
Author(s):  
T. R. Zhang ◽  
Heung Ro Choo ◽  
Michael C. Downer
Keyword(s):  
Second Harmonic Generation ◽  
Group Velocity ◽  
Harmonic Generation ◽  
Second Harmonic ◽  
Femtosecond Pulses ◽  
Velocity Matching

scholarly journals The Spectra of Quantum States and the Kronecker Coefficients of the Symmetric Group

2005 ◽  
Vol 261 (3) ◽  
pp. 789-797 ◽  
Author(s):  
Matthias Christandl ◽  
Graeme Mitchison
Keyword(s):  
Symmetric Group ◽  
Quantum States ◽  
Kronecker Coefficients

TELEPORTATION OF ANY FORM OF SINGLE-MODE QUANTUM STATES

2006 ◽  
Vol 20 (02n03) ◽  
pp. 97-103
Author(s):  
TONG-QIANG SONG
Keyword(s):  
Quantum Channel ◽  
Quantum Teleportation ◽  
Single Mode ◽  
Continuous Variable ◽  
Quantum States ◽  
Squeezed Vacuum ◽  
Einstein Podolsky Rosen ◽  
Epr Pair

By using the two-mode Einstein–Podolsky–Rosen (EPR) pair eigenstates or the two-mode squeezed vacuum as quantum channel we study the quantum teleportation of any form of single-mode quantum states (which include discrete and continuous variable quantum states). The elegant properties of the EPR pair eigenstates bring much convenience to our discussion.

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