Details
| Original language | English |
|---|---|
| Article number | 090502 |
| Journal | Physical Review Letters |
| Volume | 128 |
| Issue number | 9 |
| Publication status | Published - 4 Mar 2022 |
Abstract
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In: Physical Review Letters, Vol. 128, No. 9, 090502, 04.03.2022.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Wave-Shape-Tolerant Photonic Quantum Gates
AU - Babushkin, Ihar
AU - Demircan, Ayhan
AU - Kues, Michael
AU - Morgner, Uwe
N1 - Funding Information: I. B. and U. M. thank Deutsche Forschungsgemeinschaft (DFG, German Research Foundation), Projects No. BA 4156/4-2 and No. MO 850-19/2 for support. I. B., A. D., M. K., and U. M. acknowledge support from Germany’s Excellence Strategy within the Cluster of Excellence EXC 2122 PhoenixD (Project ID No. 390833453) and Germany’s Excellence Strategy EXC-2123 QuantumFrontiers (Project ID No. 390837967). M. K. acknowledges support from the German Ministry of Education and Research (PQuMAL project).
PY - 2022/3/4
Y1 - 2022/3/4
N2 - Photons, acting as “flying qubits” in propagation geometries such as waveguides, appear unavoidably in the form of wave packets (pulses). The actual shape of the photonic wave packet as well as possible temporal and spectral correlations between the photons play a critical role in successful scalable computation. Currently, unentangled indistinguishable photons are considered a suitable resource for scalable photonic circuits. Here we show that using so-called coherent photon conversion, it is possible to construct flying-qubit gates which are not only insensitive to wave shapes of the photons and temporal and spectral correlations between them but which also fully preserve these wave shapes and correlations upon the processing. This allows the use of photons with correlations and purity in a very broad range for a scalable computation. Moreover, such gates can process entangled photonic wave packets even more effectively than unentangled ones.
AB - Photons, acting as “flying qubits” in propagation geometries such as waveguides, appear unavoidably in the form of wave packets (pulses). The actual shape of the photonic wave packet as well as possible temporal and spectral correlations between the photons play a critical role in successful scalable computation. Currently, unentangled indistinguishable photons are considered a suitable resource for scalable photonic circuits. Here we show that using so-called coherent photon conversion, it is possible to construct flying-qubit gates which are not only insensitive to wave shapes of the photons and temporal and spectral correlations between them but which also fully preserve these wave shapes and correlations upon the processing. This allows the use of photons with correlations and purity in a very broad range for a scalable computation. Moreover, such gates can process entangled photonic wave packets even more effectively than unentangled ones.
UR - http://www.scopus.com/inward/record.url?scp=85126722624&partnerID=8YFLogxK
U2 - 10.48550/arXiv.2105.13814
DO - 10.48550/arXiv.2105.13814
M3 - Article
VL - 128
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 9
M1 - 090502
ER -