Year-end Sale % OFF 
Abstract
Single-photon sources are at the heart of quantum-optical networks, with their uniquely quantum emission and phenomenon of two-photon interference allowing for the generation and transfer of nonclassical states. Although a few analytical methods have been briefly investigated for describing pulsed single-photon sources, these methods apply only to either perfectly ideal or at least extremely idealized sources. Here, we present the first complete picture of pulsed single-photon sources by elaborating how to numerically and fully characterize non-ideal single-photon sources operating in a pulsed regime. In order to achieve this result, we make the connection between quantum Monte-Carlo simulations, experimental characterizations, and an extended form of the quantum regression theorem. We elaborate on how an ideal pulsed single-photon source is connected to its photocount distribution and its measured degree of second- and first-order optical coherence. By doing so, we provide a description of the relationship between instantaneous source correlations and the typical experimental interferometers (Hanbury-Brown and Twiss, Hong–Ou–Mandel, and Mach–Zehnder) used to characterize such sources. Then, we use these techniques to explore several prototypical quantum systems and their non-ideal behaviors. As an example numerical result, we show that for the most popular single-photon source—a resonantly excited two-level system—its error probability is directly related to its excitation pulse length. We believe that the intuition gained from these representative systems and characters can be used to interpret future results with more complicated source Hamiltonians and behaviors. Finally, we have thoroughly documented our simulation methods with contributions to the Quantum Optics Toolbox in Python in order to make our work easily accessible to other scientists and engineers.
Highlights
The development of the quantum single-photon source has ushered in the field of optical quantum information technology [1]
We have thoroughly discussed the properties of on-demand pulsed single-photon sources
We looked beyond previous studies in order to completely describe the non-idealities of single-photon sources
Summary
Corrigendum: Dynamical modeling of pulsed two-photon interference Note that the first-order coherence inherits the envelope of coherence decay from the excitation laser for long times, and always vanishes in the long time limit limk ¥ Ge(1) (t, t¢ + ktr) = 0 This is an experimental consideration that may be difficult in observing due to various long-time effects such as blinking, potentially limited laser coherence, or operating the correlator in a start-stop configuration (see the main text). We used the fact that gc(¢2d)¢[ktr] = gd(2¢c)¢[ktr], and assumed that there are no blinking effects Another common experimental trick to get a normalization by the intensity in equation (11) is to introduce distinguishability (e.g. via polarization rotation) between the two sources so that the fields cannot interfere at the detectors. Consider the resonantly driven two-level system with no dephasing: the emitted state is a pure state (with unity trace purity) even though ∣ga(1)[0]∣2 < 1 (as discussed in the main text)
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
