High frequency atomic magnetometer by use of electromagnetically induced transparency.

Atomic magnetometers have achieved magnetic sensitivities in the subfemtotesla regime. Their bandwidth is determined by the transverse spin relaxation rate, 1/T2, which also determines the magnetic sensitivity. It is theoretically demonstrated that by using an electromagnetically induced transparent probe beam in a pump-probe atomic magnetometer, it is possible to operate the latter at frequencies much higher than its bandwidth, maintaining a high signal-to-noise ratio.

[1]  W. Happer,et al.  Amplitude- versus frequency-modulated pumping light for coherent population trapping resonances at high buffer-gas pressure , 2005 .

[2]  M. Romalis,et al.  Nuclear spin gyroscope based on an atomic comagnetometer. , 2005, Physical review letters.

[3]  D. F. Kimball,et al.  Can a quantum nondemolition measurement improve the sensitivity of an atomic magnetometer? , 2004, Physical review letters.

[4]  T. W. Kornack,et al.  A subfemtotesla multichannel atomic magnetometer , 2003, Nature.

[5]  M. Romalis,et al.  High-sensitivity atomic magnetometer unaffected by spin-exchange relaxation. , 2002, Physical review letters.

[6]  W. Gawlik,et al.  Resonant nonlinear magneto-optical effects in atoms , 2002, physics/0203077.

[7]  Christoph Affolderbach,et al.  Picotesla magnetometry with coherent dark states , 2001 .

[8]  R. Traub,et al.  Ripple (approximately 200-Hz) oscillations in temporal structures. , 2000, Journal of clinical neurophysiology : official publication of the American Electroencephalographic Society.

[9]  Valeriy V. Yashchuk,et al.  Nonlinear Magneto-optic Effects with Ultranarrow Widths , 1998 .

[10]  W. Happer,et al.  Polarization of 3 He by Spin Exchange with Optically Pumped Rb and K Vapors , 1998 .

[11]  Dieter Meschede,et al.  Buffer-gas-induced linewidth reduction of coherent dark resonances to below 50 Hz , 1997 .

[12]  Lukin,et al.  Experimental demonstration of enhanced index of refraction via quantum coherence in Rb. , 1996, Physical review letters.

[13]  Moore,et al.  Spin squeezing and reduced quantum noise in spectroscopy. , 1992, Physical review. A, Atomic, molecular, and optical physics.

[14]  Scully,et al.  Resonantly enhanced refractive index without absorption via atomic coherence. , 1992, Physical review. A, Atomic, molecular, and optical physics.

[15]  T. Poutanen,et al.  Magnetic field fluctuations arising from thermal motion of electric charge in conductors , 1984 .

[16]  Valeriy V. Yashchuk,et al.  Sensitive Magnetometry based on Nonlinear Magneto-Optical Rotation , 2000 .

[17]  Harold Weinstock,et al.  SQUID sensors : fundamentals, fabrication, and applications , 1996 .