NOTICE: Due to a lapse in annual appropriations, most of this website is not being updated. Learn more.
Form submissions will still be accepted but will not receive responses at this time. Sections of this site for programs using non-appropriated funds (such as NVLAP) or those that are excepted from the shutdown (such as CHIPS and NVD) will continue to be updated.
An official website of the United States government
Here’s how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Interference of Single Photons from Two Separate Semiconductor Quantum Dots
Published
Author(s)
Edward B. Flagg, Andreas Muller, Sergey V. Polyakov, Alexander E. Ling, Glenn S. Solomon
Abstract
We demonstrate and characterize interference between discrete photons emitted by two separate semiconductor quantum dot states in different samples excited by a pulsed laser. Their energies are tuned into resonance using strain. The photons have a total coalescence probability of 18 \% and post-selection of coincidences within a narrow time window increases the probability to 47 \%. These probabilities are reduced from unity because the coherence times are not lifetime-limited due to the presence of dephasing; the post-selection value is also reduced by the detector time-response.
Flagg, E.
, Muller, A.
, Polyakov, S.
, Ling, A.
and Solomon, G.
(2010),
Interference of Single Photons from Two Separate Semiconductor Quantum Dots, Physical Review Letters, [online], https://doi.org/10.1103/PhysRevLett.104.137401
(Accessed October 7, 2025)