Continuous-variable dense coding by optomechanical cavities

TY - JOUR

T1 - Continuous-variable dense coding by optomechanical cavities

AU - Barzanjeh, Shabir

AU - Pirandola, Stefano

AU - Weedbrook, Christian

PY - 2013/10/25

Y1 - 2013/10/25

N2 - In this paper, we show how continuous-variable dense coding can be implemented using entangled light generated from a membrane-in-the-middle geometry. The mechanical resonator is assumed to be a high reflectivity membrane hung inside a high quality factor cavity. We show that the mechanical resonator is able to generate an amount of entanglement between the optical modes at the output of the cavity, which is strong enough to approach the capacity of quantum dense coding at small photon numbers. The suboptimal rate reachable by our optomechanical protocol is high enough to outperform the classical capacity of the noiseless quantum channel.

AB - In this paper, we show how continuous-variable dense coding can be implemented using entangled light generated from a membrane-in-the-middle geometry. The mechanical resonator is assumed to be a high reflectivity membrane hung inside a high quality factor cavity. We show that the mechanical resonator is able to generate an amount of entanglement between the optical modes at the output of the cavity, which is strong enough to approach the capacity of quantum dense coding at small photon numbers. The suboptimal rate reachable by our optomechanical protocol is high enough to outperform the classical capacity of the noiseless quantum channel.

KW - quant-ph

U2 - 10.1103/PhysRevA.88.042331

DO - 10.1103/PhysRevA.88.042331

M3 - Article

SN - 1050-2947

VL - 88

JO - Physical Review A

JF - Physical Review A

IS - 4

M1 - 042331

ER -