Reconfigurable quantum photonic circuits based on quantum dots
- URL: http://arxiv.org/abs/2312.10521v1
- Date: Sat, 16 Dec 2023 18:53:30 GMT
- Title: Reconfigurable quantum photonic circuits based on quantum dots
- Authors: Adam McCaw, Jacob Ewaniuk, Bhavin J. Shastri, Nir Rotenberg
- Abstract summary: We show that quantum dots can be used as reconfigurable phase shifters in quantum photonic circuits.
These findings pave the way for cryogenically-compatible, fast, and low-loss reconfigurable quantum photonic circuits.
- Score: 0.0
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: Quantum photonic integrated circuits, composed of linear-optical elements,
offer an efficient way for encoding and processing quantum information on-chip.
At their core, these circuits rely on reconfigurable phase shifters, typically
constructed from classical components such as thermo- or electro-optical
materials, while quantum solid-state emitters such as quantum dots are limited
to acting as single-photon sources. Here, we demonstrate the potential of
quantum dots as reconfigurable phase shifters. We use numerical models based on
established literature parameters to show that circuits utilizing these
emitters enable high-fidelity operation and are scalable. Despite the inherent
imperfections associated with quantum dots, such as imperfect coupling,
dephasing, or spectral diffusion, our optimization shows that these do not
significantly impact the unitary infidelity. Specifically, they do not increase
the infidelity by more than 0.001 in circuits with up to 10 modes, compared to
those affected only by standard nanophotonic losses and routing errors. For
example, we achieve fidelities of 0.9998 in quantum-dot-based circuits enacting
controlled-phase and -not gates without any redundancies. These findings
demonstrate the feasibility of quantum emitter-driven quantum information
processing and pave the way for cryogenically-compatible, fast, and low-loss
reconfigurable quantum photonic circuits.
Related papers
- Tailoring fusion-based photonic quantum computing schemes to quantum emitters [0.0]
Fusion-based quantum computation is a promising quantum computing model where small-sized photonic resource states are simultaneously entangled and measured by fusion gates.
Here, we propose fusion-based architectures tailored to the capabilities and noise models in quantum emitters.
We show that high tolerance to dominant physical error mechanisms can be achieved, with fault-tolerance thresholds of 8% for photon loss, 4% for photon distinguishability between emitters, and spin noise thresholds well above memory-induced errors.
arXiv Detail & Related papers (2024-10-09T11:31:49Z) - Deterministic generation of concatenated graph codes from quantum emitters [0.0]
Concatenation of a fault-tolerant construction with a code able to efficiently correct loss is a promising approach to achieve this.
We propose schemes for generatingd graph codes using multi-photon emission from two quantum emitters or a single quantum emitter coupled to a memory.
We show that these schemes enable fault-tolerant fusion-based quantum regimes in practical computation with high photon loss and standard fusion gates.
arXiv Detail & Related papers (2024-06-24T14:44:23Z) - On-chip quantum interference between independent lithium niobate-on-insulator photon-pair sources [35.310629519009204]
A lithium niobate-on-insulator (LNOI) integrated photonic circuit generates a two-photon path-entangled state, and a programmable interferometer for quantum interference.
We generate entangled photons with $sim2.3times108$ pairs/s/mW brightness and perform quantum interference experiments on the chip with $96.8pm3.6%$ visibility.
Our results provide a path towards large-scale integrated quantum photonics including efficient photon-pair generation and programmable circuits for applications such as boson sampling and quantum communications.
arXiv Detail & Related papers (2024-04-12T10:24:43Z) - All-optical modulation with single-photons using electron avalanche [69.65384453064829]
We demonstrate all-optical modulation using a beam with single-photon intensity.
Our approach opens up the possibility of terahertz-speed optical switching at the single-photon level.
arXiv Detail & Related papers (2023-12-18T20:14:15Z) - On-chip Hong-Ou-Mandel interference from separate quantum dot emitters
in an integrated circuit [0.3096919150448224]
We show a fully monolithic GaAs circuit combing two frequency-matched quantum dot single-photon sources interconnected with a low-loss on-chip beamsplitter connected via single-mode ridge waveguides.
This device enabled us to perform a two-photon interference experiment on-chip with visibility reaching 66%, limited by the coherence of the emitters.
arXiv Detail & Related papers (2023-01-04T17:03:04Z) - Integrated Quantum Optical Phase Sensor [48.7576911714538]
We present a photonic integrated circuit fabricated in thin-film lithium niobate.
We use the second-order nonlinearity to produce a squeezed state at the same frequency as the pump light and realize circuit control and sensing with electro-optics.
We anticipate that on-chip photonic systems like this, which operate with low power and integrate all of the needed functionality on a single die, will open new opportunities for quantum optical sensing.
arXiv Detail & Related papers (2022-12-19T18:46:33Z) - Tunable photon-mediated interactions between spin-1 systems [68.8204255655161]
We show how to harness multi-level emitters with several optical transitions to engineer photon-mediated interactions between effective spin-1 systems.
Our results expand the quantum simulation toolbox available in cavity QED and quantum nanophotonic setups.
arXiv Detail & Related papers (2022-06-03T14:52:34Z) - Quantum circuit debugging and sensitivity analysis via local inversions [62.997667081978825]
We present a technique that pinpoints the sections of a quantum circuit that affect the circuit output the most.
We demonstrate the practicality and efficacy of the proposed technique by applying it to example algorithmic circuits implemented on IBM quantum machines.
arXiv Detail & Related papers (2022-04-12T19:39:31Z) - Circuit Symmetry Verification Mitigates Quantum-Domain Impairments [69.33243249411113]
We propose circuit-oriented symmetry verification that are capable of verifying the commutativity of quantum circuits without the knowledge of the quantum state.
In particular, we propose the Fourier-temporal stabilizer (STS) technique, which generalizes the conventional quantum-domain formalism to circuit-oriented stabilizers.
arXiv Detail & Related papers (2021-12-27T21:15:35Z) - Rapid characterisation of linear-optical networks via PhaseLift [51.03305009278831]
Integrated photonics offers great phase-stability and can rely on the large scale manufacturability provided by the semiconductor industry.
New devices, based on such optical circuits, hold the promise of faster and energy-efficient computations in machine learning applications.
We present a novel technique to reconstruct the transfer matrix of linear optical networks.
arXiv Detail & Related papers (2020-10-01T16:04:22Z) - Reconfigurable quantum photonics with on-chip detectors [0.0]
We show low-power microelectromechanical reconfiguration of integrated photonic circuits interfaced with superconducting single-photon detectors on the same chip.
Our platform enables heat-load free reconfigurable linear optics and adaptive control, critical for quantum state preparation and quantum logic.
arXiv Detail & Related papers (2020-07-13T15:11:34Z)
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.