Towards Integrating True Random Number Generation in Coherent Optical Transceivers

• URL: http://arxiv.org/abs/2007.10210v1
• Date: Mon, 20 Jul 2020 15:50:10 GMT
• Title: Towards Integrating True Random Number Generation in Coherent Optical Transceivers
• Authors: Dinka Milovan\v{c}ev (1), Nemanja Voki\'c (1), Christoph Pacher (1), Imran Khan (2), Christoph Marquardt (2), Winfried Boxleitner (1), Hannes H\"ubel (1), Bernhard Schrenk (1) ((1) AIT Austrian Institute of Technology, (2) Max Planck Institute for the Science of Light)
• Abstract summary: Commercial coherent transceiver sub-systems can support quantum random number generation next to classical data transmission. Time-interleaved random number generation is demonstrated for 10 Gbaud polarization-multiplexed quadrature phase shift keyed data transmission.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: The integration of quantum communication functions often requires dedicated opto-electronic components that do not bode well with the technology roadmaps of telecom systems. We investigate the capability of commercial coherent transceiver sub-systems to support quantum random number generation next to classical data transmission, and demonstrate how the quantum entropy source based on vacuum fluctuations can be potentially converted into a true random number generator for this purpose. We discuss two possible implementations, building on a receiver- and a transmitter-centric architecture. In the first scheme, balanced homodyne broadband detection in a coherent intradyne receiver is exploited to measure the vacuum state at the input of a 90-degree hybrid. In our proof-of-principle demonstration, a clearance of >2 dB between optical and electrical noise is obtained over a wide bandwidth of more than 11 GHz. In the second scheme, we propose and evaluate the re-use of monitoring photodiodes of a polarization-multiplexed inphase/quadrature modulator for the same purpose. Time-interleaved random number generation is demonstrated for 10 Gbaud polarization-multiplexed quadrature phase shift keyed data transmission. The availability of detailed models will allow to calculate the extractable entropy and we accordingly show randomness extraction for our two proof-of-principle experiments, employing a two-universal strong extractor.

Related papers

• Entanglement of photonic modes from a continuously driven two-level system [34.50067763557076]
  We experimentally generate entangled photonic modes by continuously exciting a quantum emitter, a superconducting qubit, with a coherent drive. We show that entanglement is generated between modes extracted from the two sidebands of the resonance fluorescence spectrum. Our approach can be utilized to distribute entanglement at a high rate in various physical platforms.
  arXiv  Detail & Related papers  (2024-07-10T18:48:41Z)
• Discriminating the Phase of a Coherent Tone with a Flux-Switchable Superconducting Circuit [50.591267188664666]
  We propose a new phase detection technique based on a flux-switchable superconducting circuit. The Josephson digital phase detector (JDPD) is capable of discriminating between two phase values of a coherent input tone.
  arXiv  Detail & Related papers  (2023-06-20T08:09:37Z)
• Multimode Squeezed State for Reconfigurable Quantum Networks at Telecommunication Wavelengths [0.0]
  We present an experimental source of multimode squeezed states of light at telecommunication wavelengths. Generation at such wavelengths is especially important as it can enable quantum information processing, communication, and sensing beyond the laboratory scale. Results pave the way for a scalable implementation of continuous variable quantum information protocols at telecommunication wavelengths.
  arXiv  Detail & Related papers  (2023-06-12T17:52:40Z)
• Hyper-entanglement between pulse modes and frequency bins [101.18253437732933]
  Hyper-entanglement between two or more photonic degrees of freedom (DOF) can enhance and enable new quantum protocols. We demonstrate the generation of photon pairs hyper-entangled between pulse modes and frequency bins.
  arXiv  Detail & Related papers  (2023-04-24T15:43:08Z)
• Pulse-controlled qubit in semiconductor double quantum dots [57.916342809977785]
  We present a numerically-optimized multipulse framework for the quantum control of a single-electron charge qubit. A novel control scheme manipulates the qubit adiabatically, while also retaining high speed and ability to perform a general single-qubit rotation.
  arXiv  Detail & Related papers  (2023-03-08T19:00:02Z)
• Quantum emulation of the transient dynamics in the multistate Landau-Zener model [50.591267188664666]
  We study the transient dynamics in the multistate Landau-Zener model as a function of the Landau-Zener velocity. Our experiments pave the way for more complex simulations with qubits coupled to an engineered bosonic mode spectrum.
  arXiv  Detail & Related papers  (2022-11-26T15:04:11Z)
• A quantum dot-based frequency multiplier [0.0]
  We present a quantum dot-based radiofrequency multiplier operated at cryogenic temperatures. We implement the multiplier in a multi-gate silicon nanowire transistor using two complementary device configurations. Our results demonstrate a method for high-frequency conversion that could be readily integrated into silicon-based quantum computing systems.
  arXiv  Detail & Related papers  (2022-11-25T14:09:30Z)
• A 3.3 Gbps SPAD-Based Quantum Random Number Generator [0.4189768681039651]
  We discuss theory on the quantum random flip-flop (QRFF), which elucidates the role of circuit imperfections that manifest themselves in bias and correlation. A novel transistor implementation of the QRFF circuit is presented, which enables compensation of the degradation in entropy inherent to the finite non-symmetric transitions of the random flip-flop. A full system containing two independent arrays of the QRFF circuit is manufactured and tested in a 55 nm Bipolar-CMOS-DMOS technology node.
  arXiv  Detail & Related papers  (2022-09-11T13:56:57Z)
• High fidelity two-qubit gates on fluxoniums using a tunable coupler [47.187609203210705]
  Superconducting fluxonium qubits provide a promising alternative to transmons on the path toward large-scale quantum computing. A major challenge for multi-qubit fluxonium devices is the experimental demonstration of a scalable crosstalk-free multi-qubit architecture. Here, we present a two-qubit fluxonium-based quantum processor with a tunable coupler element.
  arXiv  Detail & Related papers  (2022-03-30T13:44:52Z)
• Deterministic Photon Sorting in Waveguide QED Systems [3.4756461334223228]
  We show that a pair of two-level emitters, chirally coupled to a waveguide, may scatter single- and two-photon components of an input pulse into temporal modes with a fidelity $gtrsim 0.9997$. The presented scheme can be employed to construct logic elements for propagating photons, such as a deterministic nonlinear-sign gate with a fidelity $gtrsim 0.9995$.
  arXiv  Detail & Related papers  (2022-02-14T19:20:05Z)
• Entanglement generation via power-of-SWAP operations between dynamic electron-spin qubits [62.997667081978825]
  Surface acoustic waves (SAWs) can create moving quantum dots in piezoelectric materials. We show how electron-spin qubits located on dynamic quantum dots can be entangled.
  arXiv  Detail & Related papers  (2020-01-15T19:00:01Z)

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.