Feedback cooling of atomic motion in cavity QED

Journal Article · Sat Jul 15 00:00:00 EDT 2006 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.74.012322· OSTI ID:20852892

Steck, Daniel A ^[1]; Jacobs, Kurt ^[1]; Mabuchi, Hideo ^[2]; Habib, Salman; Bhattacharya, Tanmoy ^[1]

---

1. Theoretical Division (T-8), MS B285, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
2. Norman Bridge Laboratory of Physics 12-33, California Institute of Technology, Pasadena, California 91125 (United States)

We consider the problem of controlling the motion of an atom trapped in an optical cavity using continuous feedback. In order to realize such a scheme experimentally, one must be able to perform state estimation of the atomic motion in real time. While in theory this estimate may be provided by a stochastic master equation describing the full dynamics of the observed system, integrating this equation in real time is impractical. Here we derive an approximate estimation equation for this purpose, and use it as a drive in a feedback algorithm designed to cool the motion of the atom. We examine the effectiveness of such a procedure using full simulations of the cavity QED system, including the quantized motion of the atom in one dimension.

• OSTI ID: 20852892
• Journal Information: Physical Review. A, Vol. 74, Issue 1; Other Information: DOI: 10.1103/PhysRevA.74.012322; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ALGORITHMS
ATOMS
COMPUTERIZED SIMULATION
COOLING
FEEDBACK
FIELD EQUATIONS
PHOTON-ATOM COLLISIONS
QUANTUM ELECTRODYNAMICS
RADIATION PRESSURE
STOCHASTIC PROCESSES
TRAPPING