Direct phase modulation via optical injection: theoretical study
- URL: http://arxiv.org/abs/2011.09263v2
- Date: Thu, 11 Mar 2021 14:37:42 GMT
- Title: Direct phase modulation via optical injection: theoretical study
- Authors: Roman Shakhovoy, Marius Puplauskis, Violetta Sharoglazova, Alexander
Duplinskiy, Vladimir Zavodilenko, Anton Losev, and Yury Kurochkin
- Abstract summary: We study the influence of the spontaneous emission noise, examine the role of the gain non-linearity and consider the effect of the temperature drift.
We have tried to formulate here practical instructions, which will help to take these features into account when elaborating and employing the optical-injection-based phase modulator.
- Score: 50.591267188664666
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Direct phase modulation via optical injection is a newly developed method for
coding the phase of a gain-switched laser, which meets high requirements placed
on transmitters for quantum key distribution: compactness, low losses,
compatibility with CMOS technologies, and the absence of undesirable effects
leading to the side-channel information leakage. Despite the successful
implementation and good prospects for the further development of this system,
there is still a lack of theoretical investigations of this scheme in the
literature. Here, for the first time, we perform its theoretical analysis. We
study the influence of the spontaneous emission noise, examine the role of the
gain non-linearity and consider the effect of the temperature drift. The
results obtained reveal that these phenomena significantly affect the system
performance. We have tried to formulate here practical instructions, which will
help to take these features into account when elaborating and employing the
optical-injection-based phase modulator.
Related papers
- High-gain photon pair generation in a microring resonator with time-dependent non-perturbative effects [6.660834045805309]
We present a quantum theory for pulsed photon pair generation in a single ring resonator.
Our approach combines the Heisenberg picture input-output formalism with the Ikeda mapping from classical nonlinear optics.
arXiv Detail & Related papers (2024-08-20T12:15:54Z) - Amplified Squeezed States: Analyzing Loss and Phase Noise [0.0]
Phase-sensitive amplification of squeezed states is a technique to mitigate high detection loss.
A case study demonstrates the benefit of phase-sensitive amplification.
This scheme is compatible with proposed gravitational-wave detectors and consistent with applications in quantum systems.
arXiv Detail & Related papers (2024-01-10T05:27:33Z) - Optical Feedback Loop in Paraxial Fluids of Light: A Gate to new
phenomena in analogue physical simulations [0.3069335774032178]
Paraxial Fluids of Light are emerging as promising platforms for the simulation and exploration of quantum-like phenomena.
We present a novel experimental approach to solve this limitation in the form of an optical feedback loop.
arXiv Detail & Related papers (2023-12-19T17:03:35Z) - A PAC-Bayesian Perspective on the Interpolating Information Criterion [54.548058449535155]
We show how a PAC-Bayes bound is obtained for a general class of models, characterizing factors which influence performance in the interpolating regime.
We quantify how the test error for overparameterized models achieving effectively zero training error depends on the quality of the implicit regularization imposed by e.g. the combination of model, parameter-initialization scheme.
arXiv Detail & Related papers (2023-11-13T01:48:08Z) - Characterization of multi-mode linear optical networks [0.0]
We formulate efficient procedures for the characterization of optical circuits in the presence of imperfections.
We show the viability of this approach in an experimentally relevant scenario, defined by a tunable integrated photonic circuit.
Our findings can find application in a wide range of optical setups, based both on bulk and integrated configurations.
arXiv Detail & Related papers (2023-04-13T13:09:14Z) - Simplified intensity- and phase-modulated transmitter for modulator-free
decoy-state quantum key distribution [0.0]
Quantum key distribution (QKD) allows secret key exchange between two users with unconditional security.
Currently, the majority of QKD systems demonstrated rely on bulk intensity and phase modulators to generate optical pulses.
We present and experimentally demonstrate a novel optical transmitter design to overcome this disadvantage by generating intensity- and phase-tunable pulses at GHz clock speeds.
arXiv Detail & Related papers (2023-04-02T16:44:25Z) - Retrieving space-dependent polarization transformations via near-optimal
quantum process tomography [55.41644538483948]
We investigate the application of genetic and machine learning approaches to tomographic problems.
We find that the neural network-based scheme provides a significant speed-up, that may be critical in applications requiring a characterization in real-time.
We expect these results to lay the groundwork for the optimization of tomographic approaches in more general quantum processes.
arXiv Detail & Related papers (2022-10-27T11:37:14Z) - Performance of teleportation-based error correction circuits for bosonic
codes with noisy measurements [58.720142291102135]
We analyze the error-correction capabilities of rotation-symmetric codes using a teleportation-based error-correction circuit.
We find that with the currently achievable measurement efficiencies in microwave optics, bosonic rotation codes undergo a substantial decrease in their break-even potential.
arXiv Detail & Related papers (2021-08-02T16:12:13Z) - Assessment of weak-coupling approximations on a driven two-level system
under dissipation [58.720142291102135]
We study a driven qubit through the numerically exact and non-perturbative method known as the Liouville-von equation with dissipation.
We propose a metric that may be used in experiments to map the regime of validity of the Lindblad equation in predicting the steady state of the driven qubit.
arXiv Detail & Related papers (2020-11-11T22:45:57Z) - Theoretical methods for ultrastrong light-matter interactions [91.3755431537592]
This article reviews theoretical methods developed to understand cavity quantum electrodynamics in the ultrastrong-coupling regime.
The article gives a broad overview of the recent progress, ranging from analytical estimate of ground-state properties to proper computation of master equations.
Most of the article is devoted to effective models, relevant for the various experimental platforms in which the ultrastrong coupling has been reached.
arXiv Detail & Related papers (2020-01-23T18:09:10Z)
This list is automatically generated from the titles and abstracts of the papers in this site.
This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.