scholarly journals Coherent-state linear optical quantum computing gates using simplified diagonal superposition resource states

2005 ◽  
Vol 71 (3) ◽  
Author(s):  
A. P. Lund ◽  
T. C. Ralph
Keyword(s):  
Quantum Computing ◽  
Coherent State ◽  
Linear Optical

scholarly journals High-fidelity linear optical quantum computing with polarization encoding

2006 ◽  
Vol 73 (1) ◽  
Author(s):  
Federico M. Spedalieri ◽  
Hwang Lee ◽  
Jonathan P. Dowling
Keyword(s):  
Quantum Computing ◽  
High Fidelity ◽  
Polarization Encoding ◽  
Linear Optical

scholarly journals A linear-optical proof that the permanent is # P -hard

2011 ◽  
Vol 467 (2136) ◽  
pp. 3393-3405 ◽  
Author(s):  
Scott Aaronson
Keyword(s):  
Quantum Computing ◽  
Complexity Theory ◽  
Universality Theorem ◽  
Linear Optical ◽  
Intuitive Proof

One of the crown jewels of complexity theory is Valiant's theorem that computing the permanent of an n × n matrix is # P -hard. Here we show that, by using the model of linear-optical quantum computing —and in particular, a universality theorem owing to Knill, Laflamme and Milburn—one can give a different and arguably more intuitive proof of this theorem.

scholarly journals Towards a Source of Multi-Photon Entangled States for Linear Optical Quantum Computing

2018 ◽  
Author(s):  
B. Villa ◽  
J. Lee ◽  
A. Bennett ◽  
M. Stevenson ◽  
D. Ellis ◽  
...  
Keyword(s):  
Quantum Computing ◽  
Entangled States ◽  
Linear Optical

scholarly journals Fault tolerance in parity-state linear optical quantum computing

2010 ◽  
Vol 82 (2) ◽  
Author(s):  
A. J. F. Hayes ◽  
H. L. Haselgrove ◽  
Alexei Gilchrist ◽  
T. C. Ralph
Keyword(s):  
Quantum Computing ◽  
Fault Tolerance ◽  
Parity State ◽  
Linear Optical

scholarly journals Linear Optical Quantum Computing in a Single Spatial Mode

2013 ◽  
Vol 111 (15) ◽  
Author(s):  
Peter C. Humphreys ◽  
Benjamin J. Metcalf ◽  
Justin B. Spring ◽  
Merritt Moore ◽  
Xian-Min Jin ◽  
...  
Keyword(s):  
Quantum Computing ◽  
Spatial Mode ◽  
Linear Optical

scholarly journals Loss tolerant linear optical quantum memory by measurement-based quantum computing

2007 ◽  
Vol 9 (6) ◽  
pp. 203-203 ◽  
Author(s):  
Michael Varnava ◽  
Daniel E Browne ◽  
Terry Rudolph
Keyword(s):  
Quantum Computing ◽  
Quantum Memory ◽  
Linear Optical

Quantum teleportation of a tripartite entangled coherent state

2021 ◽  
Author(s):  
Shivani A. Kumar
Keyword(s):  
Coherent State ◽  
Quantum Channel ◽  
Quantum Teleportation ◽  
Optical Devices ◽  
Phase Shifters ◽  
Quantum Model ◽  
Beam Splitters ◽  
Entangled Coherent State ◽  
Linear Optical

The present work proposes a scheme to teleport a tripartite coherent state using an unparalleled four-component state as a quantum channel. The scheme involves linear optical devices like beam splitters and phase shifters. It is shown that, even by taking an uncompromising quantum model, almost a complete teleportation can be achieved with an impressive number of photons. It is also shown that the teleportation fails only if zero photons are found in all the three output modes or zero in two output modes and a nonzero even/odd photon in one mode. However, the probability of getting these output modes is almost negligible.

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