Optical quantum router with cross-phase modulation

Chen, Yewang; Lin, Qing

doi:10.1007/s11432-014-5217-2

Cited by 4 publications

(4 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Q R Quantum routers have been investigated both theoretically and experimentally for various experimental platforms [8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25]. Not all of these implementations can, however, be considered as fully quantum.…”

mentioning

confidence: 99%

“…In some cases, the routing information is classical and thus the router only semi-quantum [9,10]. Other implementations rely on non-linear interaction [11] or combine various nonoptical physical platforms making them impractical for realistic quantum networks [12][13][14]. There are implementations that disturb the inserted signal state and thus can not even be considered quantum routers at all [26].…”

mentioning

confidence: 99%

See 1 more Smart Citation

Implementation of an efficient linear-optical quantum router

Bartkiewicz

Cernoch

Lemr

2018

Sci Rep

View full text Add to dashboard Cite

For several decades, scientists have been aware of significant benefits allowing quantum information processing technologies to surpass their classical counterparts. Recent technological development allows these benefits to be tested experimentally and in some cases also implemented in practical devices. So far the majority of experimental quantum networks was limited to peer-to-peer communications between two parties. Practical implementation of quantum communications networks, however, needs to address the problem of scalability to serve large numbers of users. Similarly to classical computer networks, their quantum counterparts would require routing protocols to direct the signal from its source to destination. Devices implementing these routing protocols are called quantum routers and have recently been subject of an intense research. In this paper, we report on experimental implementation of a linear-optical quantum router. Our device allows single-photon polarization-encoded qubits to be routed coherently into two spatial output modes depending on the state of two identical control qubits. The polarization qubit state of the routed photon is maintained during the routing operation. The success probability of our scheme can be increased up to 25% making it the most efficient linear-optical quantum router developed to this date.

show abstract

mentioning

confidence: 99%

mentioning

confidence: 99%

Implementation of an efficient linear-optical quantum router

Bartkiewicz

Cernoch

Lemr

2018

Sci Rep

View full text Add to dashboard Cite

show abstract

“…entanglement concentration [45][46][47][48][49][50][51][52], entangled states generation [53][54][55][56], and others [57][58][59][60][61][62][63][64][65][66][67][68], etc. Its feasibility had been demonstrated in theory [69][70][71][72][73], even the multi-mode effect is taken into account.…”

Section: Discussionmentioning

confidence: 99%

Multiple multicontrol unitary operations: Implementation and applications

Lin

2018

Sci. China Phys. Mech. Astron.

Self Cite

View full text Add to dashboard Cite

How to implement a computation task efficiently is the central problem in quantum computation science. For a quantum circuit, the multi-control unitary operations are the very important components. We present an extremely efficient approach to implement multiple multi-control unitary operations directly without any decompositions to CNOT gates and single-photon gates. The necessary two-photon operations could be reduced from O(n 3 ) with the traditional decomposition approach to O(n) with the present approach, which will greatly relax the requirement resources and make this approach much feasible for large scale quantum computation. Moreover, the potential application to the (n-k)-uniform hypergraph state generation is proposed.multi-control unitary operation, cross phase modulation, c-path gate, merging gate, hypergraph state PACS number(s): 03.67. Lx, 42.50.Dv Citation:

show abstract

“…Two similar linear optical processes, named "quantum jointing" and "quantum splitting," have been demonstrated. [30] Various single-photon routing schemes based on photonic qubits, [31][32][33] cross-Kerr nonlinearity, [34] atom-cavity, [35][36][37] coupled resonators, [38,39] or optomechanical systems [40] have been proposed or demonstrated. [41] Recently, some schemes [42][43][44][45][46] have been proposed for the construction of single-photon quantum routers based on the nonlinear interaction of the photon-atom in a cavity quantum electrodynamics (QED) system.…”

Section: Introductionmentioning

confidence: 99%

Error-detected single-photon quantum routing using a quantum dot and a double-sided microcavity system

et al. 2019

View full text Add to dashboard Cite

Based on a hybrid system consisting of a quantum dot coupled with a double-sided micropillar cavity, we investigate the implementation of an error-detected photonic quantum routing controlled by the other photon. The computational errors from unexpected experimental imperfections are heralded by single photon detections, resulting in a unit fidelity for the present scheme, so that this scheme is intrinsically robust. We discuss the performance of the scheme with currently achievable experimental parameters. Our results show that the present scheme is efficient. Furthermore, our scheme could provide a promising building block for quantum networks and distributed quantum information processing in the future.

show abstract

Optical quantum router with cross-phase modulation

Cited by 4 publications

References 43 publications

Implementation of an efficient linear-optical quantum router

Implementation of an efficient linear-optical quantum router

Multiple multicontrol unitary operations: Implementation and applications

Error-detected single-photon quantum routing using a quantum dot and a double-sided microcavity system

Contact Info

Product

Resources

About