|
| related topics |
| {light, field, probe} |
| {level, atom, field} |
| {state, states, coherent} |
| {measurement, state, measurements} |
| {phase, path, phys} |
| {operator, operators, space} |
| {photon, photons, single} |
| {error, code, errors} |
| {spin, pulse, spins} |
|
Quantum limit of optical magnetometry in the presence of ac-Stark shifts
M. Fleischhauer, A. B. Matsko, M. O. Scully
abstract: We analyze systematic (classical) and fundamental (quantum) limitations of
the sensitivity of optical magnetometers resulting from ac-Stark shifts. We
show that in contrast to absorption-based techniques, the signal reduction
associated with classical broadening can be compensated in magnetometers based
on phase measurements using electromagnetically induced transparency (EIT).
However due to ac-Stark associated quantum noise the signal-to-noise ratio of
EIT-based magnetometers attains a maximum value at a certain laser intensity.
This value is independent on the quantum statistics of the light and defines a
standard quantum limit of sensitivity. We demonstrate that an EIT-based optical
magnetometer in Faraday configuration is the best candidate to achieve the
highest sensitivity of magnetic field detection and give a detailed analysis of
such a device.
- oai_identifier:
- oai:arXiv.org:quant-ph/0001072
- categories:
- quant-ph
- comments:
- 11 pages, 4 figures
- doi:
- 10.1103/PhysRevA.62.013808
- arxiv_id:
- quant-ph/0001072
- created:
- 2000-01-20
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