Laser noise imposed limitations of ensemble quantum metrology
نویسندگان
چکیده
منابع مشابه
Reduction of Classical Measurement Noise via Quantum-Dense Metrology.
Quantum-dense metrology constitutes a special case of quantum metrology in which two orthogonal phase space projections of a signal are simultaneously sensed beyond the shot-noise limit. Previously, it was shown that the additional sensing channel that is provided by quantum-dense metrology contains information that can be used to identify and to discard corrupted segments from the measurement ...
متن کاملEfficient tools for quantum metrology with uncorrelated noise
Quantum metrology offers enhanced performance in experiments on topics such as gravitational wave-detection, magnetometry or atomic clock frequency calibration. The enhancement, however, requires a delicate tuning of relevant quantum features, such as entanglement or squeezing. For any practical application, the inevitable impact of decoherence needs to be taken into account in order to correct...
متن کاملUsing entanglement against noise in quantum metrology [1]
FIG. 1. Quantum metrology strategies. The maps Λφ encode the parameter φ to be estimated. (i) sequential scheme: Λφ acts n times sequentially on N/n input probes ρ (this is an entanglement-free classical scheme) ; (ii) entangled parallel scheme: an entangled state of N probes ρN goes through N maps Λφ in parallel; (iii) passive ancilla scheme: the N probes are also entangled with M noiseless an...
متن کاملQuantum-enhanced metrology for multiple phase estimation with noise
We present a general quantum metrology framework to study the simultaneous estimation of multiple phases in the presence of noise as a discretized model for phase imaging. This approach can lead to nontrivial bounds of the precision for multiphase estimation. Our results show that simultaneous estimation (SE) of multiple phases is always better than individual estimation (IE) of each phase even...
متن کاملDeep-ultraviolet quantum interference metrology with ultrashort laser pulses.
Precision spectroscopy at ultraviolet and shorter wavelengths has been hindered by the poor access of narrow-band lasers to that spectral region. We demonstrate high-accuracy quantum interference metrology on atomic transitions with the use of an amplified train of phase-controlled pulses from a femtosecond frequency comb laser. The peak power of these pulses allows for efficient harmonic upcon...
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 B: Atomic, Molecular and Optical Physics
سال: 2016
ISSN: 0953-4075,1361-6455
DOI: 10.1088/0953-4075/49/24/245501