Quantum multiparameter metrology with generalized entangled coherent state
نویسندگان
چکیده
منابع مشابه
Quantum metrology with entangled coherent states.
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 curre...
متن کاملQuantum metrology with entangled photons
Although most physics experiments are carried out with independent particles, it is the collective nature of entangled particles that reveals the most fascinating and unexpected aspects of the quantum world. It was Erwin Schrödinger who first said “entanglement is not one but rather the characteristic trait of quantum mechanics”. One curious aspect of the behavior of a pair of particles in an e...
متن کاملMulticolor quantum metrology with entangled photons.
Entangled photons can be used to make measurements with an accuracy beyond that possible with classical light. While most implementations of quantum metrology have used states made up of a single color of photons, we show that entangled states of two colors can show supersensitivity to optical phase and path length by using a photonic crystal fiber source of photon pairs inside an interferomete...
متن کاملMulti-Colour Quantum Metrology with Entangled Photons
Bryn Bell, Srikanth Kannan, Alex McMillan, Alex S. Clark, William J. Wadsworth, and John G. Rarity1,∗ Centre for Quantum Photonics, Department of Electrical and Electronic Engineering, University of Bristol, Bristol BS8 1UB, UK Centre for Ultrahigh bandwidth Devices for Optical Systems (CUDOS), Institute of Photonics and Optical Science, University of Sydney, NSW 2006, Australia and Centre for ...
متن کاملEntangled-coherent-state quantum key distribution with entanglement witnessing
David S. Simon,1,2 Gregg Jaeger,2,3 and Alexander V. Sergienko2,4,5 1Department of Physics and Astronomy, Stonehill College, 320 Washington Street, Easton, Massachusetts 02357, USA 2Department of Electrical and Computer Engineering, Boston University, 8 Saint Mary’s Street, Boston, Massachusetts 02215, USA 3Division of Natural Sciences and Mathematics, Boston University, Boston, Massachusetts 0...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Physics A: Mathematical and Theoretical
سال: 2016
ISSN: 1751-8113,1751-8121
DOI: 10.1088/1751-8113/49/11/115302