DATA ON PHYSICS DISCUSSED BY RESEARCHERS AT ARMENIAN NATIONAL ACADEMY OF SCIENCE

Physics Week
November 9, 2010

“We present a mechanism to produce indistinguishable single-photon
pulses on demand from an optical cavity. The sequences of two laser
pulses generate, at the two Raman transitions of a four-level atom,
the same cavity-mode photons without repumping of the atom between
photon generations,” scientists in Armenia report.

“Photons are emitted from the cavity with near-unit efficiency in
well-defined temporal modes of identical shapes controlled by the
laser fields. The second-order correlation function reveals the
single-photon nature of the proposed source,” wrote A. Gogyan and
colleagues, Armenian National Academy of Science.

The researchers concluded: “A realistic setup for the experimental
implementation is presented.”

Gogyan and colleagues published their study in Physical Review a
(Deterministic source of a train of indistinguishable single-photon
pulses with a single-atom-cavity system. Physical Review a,
2010;82(2):3821).

For more information, contact A. Gogyan, Armenian National Academy
Science, Institute Physics Research, Ashtarak 0203 2, Armenia.

Publisher contact information for the journal Physical Review a
is: American Physical Society, One Physics Ellipse, College Pk,
MD 20740-3844, USA.

From: A. Papazian