TY - JOUR
T1 - Entanglement-preserving photonic switching
T2 - Full cross-bar operation with quantum data streams
AU - Oza, Neal N.
AU - Huang, Yu Ping
AU - Kumar, Prem
PY - 2014/2/15
Y1 - 2014/2/15
N2 - As the field of quantum communications matures and adopts larger network topologies, it will require switches capable of multiplexing and demultiplexing entangled photons between network nodes. Such switches will need to operate at high speeds, with low loss, and minimal signal-band noise, while also retaining the quantum state of the routed photons. We present an all-optical, fiber-based, dual-in, dual-out switch that has a switching window of 45 ps and an insertion loss of <3.0 dB. In addition, the switch introduces minimal degradation (<1.5) to the quantum state of the routed entangled photons. As a test of the switch's utility, we demultiplex a single quantum channel from a 6.5-GHz dual-channel quantum data stream. The recovered quantum state exhibits a fidelity of 96.2± 1.2 with the prepared state.
AB - As the field of quantum communications matures and adopts larger network topologies, it will require switches capable of multiplexing and demultiplexing entangled photons between network nodes. Such switches will need to operate at high speeds, with low loss, and minimal signal-band noise, while also retaining the quantum state of the routed photons. We present an all-optical, fiber-based, dual-in, dual-out switch that has a switching window of 45 ps and an insertion loss of <3.0 dB. In addition, the switch introduces minimal degradation (<1.5) to the quantum state of the routed entangled photons. As a test of the switch's utility, we demultiplex a single quantum channel from a 6.5-GHz dual-channel quantum data stream. The recovered quantum state exhibits a fidelity of 96.2± 1.2 with the prepared state.
KW - Quantum communications
KW - crossphase modulation
KW - nonlinear optical loop mirror
KW - optical fiber communication
KW - optical switches
UR - http://www.scopus.com/inward/record.url?scp=84893705090&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84893705090&partnerID=8YFLogxK
U2 - 10.1109/LPT.2013.2293953
DO - 10.1109/LPT.2013.2293953
M3 - Article
AN - SCOPUS:84893705090
SN - 1041-1135
VL - 26
SP - 356
EP - 359
JO - IEEE Photonics Technology Letters
JF - IEEE Photonics Technology Letters
IS - 4
M1 - 6678557
ER -