Quantum metrology with entangled coherent states

TY - JOUR

T1 - Quantum metrology with entangled coherent states

AU - Joo, Jaewoo

AU - Munro, William J.

AU - Spiller, Timothy P.

PY - 2011/8/16

Y1 - 2011/8/16

N2 - We present an improved phase estimation scheme employing entangled coherent states and demonstrate that these states give the smallest variance in the phase parameter in comparison to NOON, "bat," and "optimal" states under perfect and lossy conditions. As these advantages emerge for very modest particle numbers, the optical version of entangled coherent state metrology is achievable with current technology.

AB - We present an improved phase estimation scheme employing entangled coherent states and demonstrate that these states give the smallest variance in the phase parameter in comparison to NOON, "bat," and "optimal" states under perfect and lossy conditions. As these advantages emerge for very modest particle numbers, the optical version of entangled coherent state metrology is achievable with current technology.

UR - http://www.scopus.com/inward/record.url?scp=84860389395&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.107.083601

DO - 10.1103/PhysRevLett.107.083601

M3 - Article

AN - SCOPUS:84860389395

SN - 0031-9007

VL - 107

JO - Physical Review Letters

JF - Physical Review Letters

IS - 8

M1 - 083601

ER -