LINEAR OPTICAL PROTOCOL FOR GENERATION OF W STATE WITHIN A NETWORK

2010 ◽  
Vol 08 (07) ◽  
pp. 1199-1206 ◽  
Author(s):  
PEI-MIN LU ◽  
YAN XIA ◽  
JIE SONG ◽  
HE-SHAN SONG
Keyword(s):  
Single Photon ◽  
W State ◽  
Entangled State ◽  
Photon Polarization ◽  
Photon Detectors ◽  
Optical Elements ◽  
Classical Communication ◽  
Linear Optical ◽  
Linear Optical Elements

We demonstrate a linear optical protocol to generate W state in terms of optical elements within a network. The proposed setup involves simple linear optical elements, N-photon polarization entangled state, and conventional photon detectors that only distinguish the vacuum and nonvacuum Fock number states. We show that with local operations, single-photon measurement, and one way classical communication, the protocol can be successfully realized with a certain probability.

ontrolled implementation of two-photon controlled phase gate within a network

2010 ◽  
Vol 10 (9&10) ◽  
pp. 821-828
Author(s):  
Yan Xia ◽  
Jie Song ◽  
Zhen-Biao Yang ◽  
Shi-Biao Zheng
Keyword(s):  
Quantum Computer ◽  
Photon Detectors ◽  
Optical Elements ◽  
Experimental Realization ◽  
Two Photon ◽  
Phase Gate ◽  
Controlled Phase Gate ◽  
Linear Optical ◽  
Polarized Photons ◽  
Linear Optical Elements

We propose a protocol to controlled implement the two-photon controlled phase gate within a network by using interference of polarized photons. The realization of this protocol is appealing due to the fact that the quantum state of light is robust against the decoherence, and photons are ideal carriers for transmitting quantum information over long distances. The proposed setup involves simple linear optical elements and the conventional photon detectors that only distinguish the vacuum and nonvacuum Fock number states. This can greatly simplify the experimental realization of a linear optical quantum computer.

LINEAR OPTICAL IMPLEMENTATION OF DISCRETE QUANTUM FOURIER TRANSFORM WITH CONVENTIONAL PHOTON DETECTORS

2011 ◽  
Vol 09 (01) ◽  
pp. 509-518 ◽  
Author(s):  
HONG-FU WANG ◽  
SHOU ZHANG ◽  
KYU-HWANG YEON
Keyword(s):  
Fourier Transform ◽  
Success Probability ◽  
Optical Scheme ◽  
Quantum Fourier Transform ◽  
Photon Polarization ◽  
Photon Detectors ◽  
Optical Elements ◽  
Two Photon ◽  
Complex Linear ◽  
Linear Optical

We present a linear optical scheme for implementing two-bit discrete quantum Fourier transform based only on simple linear optical elements, a pair of two-photon polarization entangled states, and the conventional photon detectors that only distinguish between the presence and absence of the photons. The scheme can be implemented with a certain success probability, and the implementation of the scheme in experiment would be an important step towards more complex linear optical quantum computation.

Scheme for preparation of the W-state by using linear optical elements

2003 ◽  
Vol 5 (3) ◽  
pp. 208-210 ◽  
Author(s):  
Guo-Yong Xiang ◽  
Yong-Sheng Zhang ◽  
Jian Li ◽  
Guang-Can Guo
Keyword(s):  
W State ◽  
Optical Elements ◽  
Linear Optical ◽  
Linear Optical Elements

NEW EXPERIMENTAL PROTOCOL OF TELEPORTING AN ARBITRARY SINGLE-QUBIT STATE BY USING HYPERENTANGLED PHOTON PAIRS

2009 ◽  
Vol 07 (08) ◽  
pp. 1515-1520
Author(s):  
WEN-ZHEN CAO ◽  
YAN-HUA WU ◽  
CHONG LI
Keyword(s):  
Qubit State ◽  
Experimental Protocol ◽  
Photon Detectors ◽  
Optical Elements ◽  
Single Qubit ◽  
Photon Pairs ◽  
Linear Optical ◽  
Set Up ◽  
Photon Source ◽  
Linear Optical Elements

A new experimental protocol of teleportation is proposed by using hyperentangled photon pairs, and by this protocol the probability approaches unity. This set-up is made of hyper-entangled photon source, linear optical elements and conventional photon detectors.

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