Resource-efficient loss-aware photonic graph state preparation using atomic emitters
- URL: http://arxiv.org/abs/2402.00731v2
- Date: Mon, 02 Dec 2024 01:40:37 GMT
- Title: Resource-efficient loss-aware photonic graph state preparation using atomic emitters
- Authors: Eneet Kaur, Ashlesha Patil, Saikat Guha,
- Abstract summary: Multi-qubit entangled photonic graph states are an important ingredient for all-photonic quantum computing, repeaters and networking.
We propose an algorithm that can trade the number of emitters with the graph-state depth, while minimizing the number of emitter CNOTs.
- Score: 0.7482855795615639
- License:
- Abstract: Multi-qubit entangled photonic graph states are an important ingredient for all-photonic quantum computing, repeaters and networking. Preparing them using probabilistic stitching of single photons using linear optics presents a formidable resource challenge due to multiplexing needs. Quantum emitters provide a viable solution to prepare photonic graph states as they enable deterministic production of photons entangled with emitter qubits, and deterministic two-qubit interactions among emitters. A handful of emitters often suffice to generate useful-size graph states that would otherwise require millions of emitters used as single photon sources, using the linear-optics method. Photon loss however impedes the emitter method due to a large circuit depth, and hence loss accrual on the photons of the graph state produced, given the typically large number of slow two-qubit CNOT gates between emitters. We propose an algorithm that can trade the number of emitters with the graph-state depth, while minimizing the number of emitter CNOTs. We apply our algorithm to generate a repeater graph state (RGS) for a new all-photonic repeater protocol, which achieves a far superior rate-distance tradeoff compared to using the least number of emitters needed to generate the RGS. Yet, it needs five orders of magnitude fewer emitters than the multiplexed linear-optics method -- with each emitter used as a photon source -- to achieve a desired rate-distance performance.
Related papers
- Atom-mediated deterministic generation and stitching of photonic graph states [0.0]
Highly-entangled multi-photon graph states are a crucial resource in photonic quantum computation and communication.
We introduce a multi-gate quantum node comprised of a single atom in a W-type level scheme coupled to an optical resonator.
The ability to deterministically entangle photonic qubits enables expanding the generated state by stitching graphs from different devices.
arXiv Detail & Related papers (2024-06-02T20:33:40Z) - Heralded photonic graph states with inefficient quantum emitters [2.612403257963011]
Quantum emitter-based schemes for the generation of photonic graph states offer a promising, resource efficient methodology.
We present a heralded scheme for making photonic graph states that is compatible with the typically poor photon collection from state-of-the-art quantum emitters.
arXiv Detail & Related papers (2024-05-22T00:24:01Z) - Optimization of deterministic photonic graph state generation via local operations [3.2106353278518105]
We introduce an optimization method for such protocols based on the local Clifford equivalency of states and the graph theoretical correlations of the generation cost parameters.
We achieve a 50% reduction in use of the 2-qubit gates for generation of the arbitrary large repeater graph states and similar significant reductions in the total gate count for generation of random dense graphs.
arXiv Detail & Related papers (2024-01-01T02:11:49Z) - Experimental realization of deterministic and selective photon addition
in a bosonic mode assisted by an ancillary qubit [50.591267188664666]
Bosonic quantum error correcting codes are primarily designed to protect against single-photon loss.
Error correction requires a recovery operation that maps the error states -- which have opposite parity -- back onto the code states.
Here, we realize a collection of photon-number-selective, simultaneous photon addition operations on a bosonic mode.
arXiv Detail & Related papers (2022-12-22T23:32:21Z) - On-chip quantum information processing with distinguishable photons [55.41644538483948]
Multi-photon interference is at the heart of photonic quantum technologies.
Here, we experimentally demonstrate that detection can be implemented with a temporal resolution sufficient to interfere photons detuned on the scales necessary for cavity-based integrated photon sources.
We show how time-resolved detection of non-ideal photons can be used to improve the fidelity of an entangling operation and to mitigate the reduction of computational complexity in boson sampling experiments.
arXiv Detail & Related papers (2022-10-14T18:16:49Z) - Distillation of Indistinguishable Photons [0.0]
A reliable source of identical (indistinguishable) photons is a prerequisite for interference effects.
We present a protocol which can be used to increase the indistinguishability of a photon source, to arbitrary accuracy.
We demonstrate the scheme is robust to detection and control errors in the optical components, and discuss the effect of other error sources.
arXiv Detail & Related papers (2022-03-29T02:27:07Z) - En route to nanoscopic quantum optical imaging: counting emitters with
photon-number-resolving detectors [8.54443177764705]
Fundamental understanding of biological pathways requires minimally invasive nanoscopic optical resolution imaging.
Many approaches to high-resolution imaging rely on localization of single emitters, such as fluorescent molecule or quantum dot.
We show that quantum measurements of the number of photons emitted from an ensemble of emitters enable the determination of the number of emitters and the probability of emission.
arXiv Detail & Related papers (2021-10-08T04:52:42Z) - Regularization by Denoising Sub-sampled Newton Method for Spectral CT
Multi-Material Decomposition [78.37855832568569]
We propose to solve a model-based maximum-a-posterior problem to reconstruct multi-materials images with application to spectral CT.
In particular, we propose to solve a regularized optimization problem based on a plug-in image-denoising function.
We show numerical and experimental results for spectral CT materials decomposition.
arXiv Detail & Related papers (2021-03-25T15:20:10Z) - 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) - A bright and fast source of coherent single photons [46.25143811066789]
A single photon source is a key enabling technology in device-independent quantum communication.
We report a single photon source with an especially high system efficiency.
arXiv Detail & Related papers (2020-07-24T17:08:46Z) - Inverse-designed photon extractors for optically addressable defect
qubits [48.7576911714538]
Inverse-design optimization of photonic devices enables unprecedented flexibility in tailoring critical parameters of a spin-photon interface.
Inverse-designed devices will enable realization of scalable arrays of single-photon emitters, rapid characterization of new quantum emitters, sensing and efficient heralded entanglement schemes.
arXiv Detail & Related papers (2020-07-24T04:30:14Z)
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.