Precision measurement scheme using a quantum interferometer
- Department of Physics, University of Ulsan, Ulsan 680-749 (Korea, Republic of)
We present a scheme that makes use of quantum mechanical entanglement to significantly enhance the measurement precision accessible by interferometers. This is achieved by making use of a special type of interferometer composed of two ''quantum beam splitters,'' which each transform the input particles into a macroscopic superposition at the outputs. We show that this technique not only enables phase measurements to be made with Heisenberg limited precision, but also overcomes the major practical problems of detector inefficiencies and imperfect beam splitters. It may provide a promising route to implementing sub-shot-noise limited measurement schemes in the laboratory.
- OSTI ID:
- 20786604
- Journal Information:
- Physical Review. A, Journal Name: Physical Review. A Journal Issue: 5 Vol. 72; ISSN 1050-2947; ISSN PLRAAN
- Country of Publication:
- United States
- Language:
- English
Similar Records
Testing quantum mechanics against macroscopic realism using the output of {chi}{sup (2)} nonlinearity
Quantum-enhanced distributed phase sensing with a truncated SU(1,1) interferometer
Adiabatic Mach–Zehnder interferometer in a dipolar spin-1 condensate
Journal Article
·
Fri Sep 15 00:00:00 EDT 2006
· Physical Review. A
·
OSTI ID:20857761
Quantum-enhanced distributed phase sensing with a truncated SU(1,1) interferometer
Journal Article
·
Wed Jun 04 20:00:00 EDT 2025
· Physical Review Research
·
OSTI ID:2573637
Adiabatic Mach–Zehnder interferometer in a dipolar spin-1 condensate
Journal Article
·
Sun Jan 14 23:00:00 EST 2018
· Annals of Physics
·
OSTI ID:22848269