A scheme for fully programmable linear quantum networks based on frequency conversion

• URL: http://arxiv.org/abs/2402.06786v1
• Date: Fri, 9 Feb 2024 21:20:19 GMT
• Title: A scheme for fully programmable linear quantum networks based on frequency conversion
• Authors: Patrick Folge, Michael Stefszky, Benjamin Brecht and Christine Silberhorn
• Abstract summary: Linear optical quantum networks, consisting of a quantum input state and a multi-port interferometer, are an important building block for many quantum technological concepts. Here, we propose the implementation of such networks based on frequency conversion by utilising a so called multi-output quantum pulse gate (mQPG) This approach allows the resource efficient and therefore scalable implementation of frequency-bin based, fully programmable interferometers in a single spatial and polarization mode.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Linear optical quantum networks, consisting of a quantum input state and a multi-port interferometer, are an important building block for many quantum technological concepts, e.g., Gaussian boson sampling. Here, we propose the implementation of such networks based on frequency conversion by utilising a so called multi-output quantum pulse gate (mQPG). This approach allows the resource efficient and therefore scalable implementation of frequency-bin based, fully programmable interferometers in a single spatial and polarization mode. Quantum input states for this network can be provided by utilising the strong frequency entanglement of a type-0 parametric down conversion (PDC) source. Here, we develop a theoretical framework to describe linear networks based on a mQPG and PDC and utilize it to investigate the limits and scalabilty of our approach.

Related papers

• RSFQ All-Digital Programmable Multi-Tone Generator For Quantum Applications [36.136619420474766]
  Rapid Single Flux Quantum (RSFQ) technology is at the forefront of replacing current standard CMOS-based control architectures. We present a novel RSFQ device that generates multi tone digital signals, based on complex pulse train sequences.
  arXiv  Detail & Related papers  (2024-11-13T15:03:28Z)
• Purifying quantum-dot light in a coherent frequency interface [39.58317527488534]
  Quantum networks operate in the telecom wavelengths to take advantage of low-loss transmission in optical fibres. Bright quantum dots (QDs) emitting highly indistinguishable quantum states of light, such as InGaAs QDs, often emit photons in the near infrared. We report a method for simultaneously implementing spectral purification and frequency shifting of single photons from QD sources to the C-band in a periodically poled Lithium Niobate waveguide.
  arXiv  Detail & Related papers  (2024-07-11T18:02:43Z)
• Quantum Random Access Codes Implementation for Resource Allocation and Coexistence with Classical Telecommunication [32.73124984242397]
  Modern quantum networks have limited capacity to distribute resources among different users. We experimentally test our encoding and decoding strategy from the resource allocation perspective. By emulating a coexistent classical communication, we test the resilience of our implementation in presence of noise.
  arXiv  Detail & Related papers  (2024-03-27T20:46:50Z)
• Variational protocols for emulating digital gates using analog control with always-on interactions [37.69303106863453]
  We show that we can engineer layers of single-qubit and multi-qubit gates in neutral atom quantum simulators. We discuss how the proposed method can be used to perform refocusing algorithms, SWAP networks, and ultimately quantum chemistry simulations.
  arXiv  Detail & Related papers  (2024-02-12T13:51:26Z)
• Mapping quantum circuits to shallow-depth measurement patterns based on graph states [0.0]
  We create a hybrid simulation technique for measurement-based quantum computing. We show that groups of fully commuting operators can be implemented using fully-parallel, i.e., non-adaptive, measurements. We discuss how such circuits can be implemented in constant quantum depths by employing quantum teleportation.
  arXiv  Detail & Related papers  (2023-11-27T19:00:00Z)
• 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)
• Characterization of Quantum Frequency Processors [0.0]
  Frequency-bin qubits possess unique synergies with wavelength-multiplexed lightwave communications. The quantum frequency processor (QFP) provides a scalable path for gate synthesis leveraging standard telecom components.
  arXiv  Detail & Related papers  (2023-02-03T02:08:07Z)
• Quantum Federated Learning with Entanglement Controlled Circuits and Superposition Coding [44.89303833148191]
  We develop a depth-controllable architecture of entangled slimmable quantum neural networks (eSQNNs) We propose an entangled slimmable QFL (eSQFL) that communicates the superposition-coded parameters of eS-QNNs. In an image classification task, extensive simulations corroborate the effectiveness of eSQFL.
  arXiv  Detail & Related papers  (2022-12-04T03:18:03Z)
• Fast Swapping in a Quantum Multiplier Modelled as a Queuing Network [64.1951227380212]
  We propose that quantum circuits can be modeled as queuing networks. Our method is scalable and has the potential speed and precision necessary for large scale quantum circuit compilation.
  arXiv  Detail & Related papers  (2021-06-26T10:55:52Z)
• A variational quantum eigensolver for dynamic correlation functions [0.9176056742068814]
  We show how the calculation of zero-temperature dynamic correlation functions can be recast into a modified VQE algorithm. This allows for important physical expectation values describing the dynamics of the system to be directly converged on the frequency axis. We believe the approach shows potential for the extraction of frequency dynamics of correlated systems on near-term quantum processors.
  arXiv  Detail & Related papers  (2021-05-04T18:52:45Z)

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.