Device-independent, megabit-rate quantum random number generator with beam-splitter-free architecture and live Bell test certification

• URL: http://arxiv.org/abs/2412.18285v2
• Date: Sat, 22 Mar 2025 11:05:52 GMT
• Title: Device-independent, megabit-rate quantum random number generator with beam-splitter-free architecture and live Bell test certification
• Authors: Ayan Kumar Nai, Vimlesh Kumar, M. Ebrahim-Zadeh, G. K. Samanta,
• Abstract summary: Device-independent quantum random number generators (DI-QRNGs) are crucial for information processing.<n>We present a high-bit-rate DI-QRNG with live quantumness certification through the Bell test.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Device-independent quantum random number generators (DI-QRNGs) are crucial for information processing, ensuring certified quantumness and genuine randomness. However, existing implementations often face low bit rates due to quantumness testing challenges. Here, we present a high-bit-rate DI-QRNG with live quantumness certification through the Bell test. Using spontaneous parametric down-conversion in a polarization Sagnac interferometer, we generate entangled pair-photons at diametrically opposite points on an annular ring with strong spatial and temporal correlations. Dividing the ring into six diametrically opposite sections, we create three entangled photon sources that exhibit bias-free quantum mechanical randomness from a single resource. By utilizing the coincidence counts of pair-photons from two sources, we generate raw bits, while the third source simultaneously measures the Bell's parameter without any loss of QRNG bits. We have generated 90 million raw bits in 46.4 seconds with the Bell parameter (S $>$ 2), with a minimum entropy extraction ratio exceeding 97$\%$. Post-processed using a Toeplitz matrix, the DI-QRNG achieves a bit rate of 1.8 Mbps, passing all NIST 800-22 and TestU01 tests. In the absence of Bell's parameter for a non-maximally entangled state, $g^{(2)}(0)$ can be the metric for quantumness measure. Scalable and beam-splitter-free, this megabit-rate DI-QRNG is ideal for practical applications.

Related papers

• Bandwidth-tunable Telecom Single Photons Enabled by Low-noise Optomechanical Transduction [45.37752717923078]
  Single-photon sources are of fundamental importance to emergent quantum technologies. Nano-structured optomechanical crystals provide an attractive platform for single photon generation. Optical absorption heating has thus far prevented these systems from being widely used in practical applications.
  arXiv  Detail & Related papers  (2024-10-14T18:00:00Z)
• Beamsplitter-free, high bit-rate, quantum random number generator based on temporal and spatial correlations of heralded single-photons [4.745219075203435]
  We report on high-bit-rate quantum random number generation (QRNG) using spatial correlation of photon-pairs. We achieved a QRNG with a bit-rate of 3 Mbps, passing all NIST 800-22 and TestU01 test suites. The generic scheme shows the possibility of further enhancement of the bit rate through more sectioning of the SPDC ring.
  arXiv  Detail & Related papers  (2024-10-01T06:40:40Z)
• Analysis of a Programmable Quantum Annealer as a Random Number Generator [1.0878040851638]
  We present experimental random number results from a D-Wave 2000Q quantum annealer. The results show that the generated random bits from the D-Wave 2000Q are biased, and not unpredictable random bit sequences.
  arXiv  Detail & Related papers  (2023-07-05T18:15:06Z)
• Generation of quantum-certified random numbers using on-chip path-entangled single photons from an LED [0.0]
  Single-photon entanglement is a peculiar type of entanglement in which two or more degrees of freedom of a single photon are correlated quantum-mechanically. We demonstrate a photonic integrated chip (PIC) able to generate and manipulate single-photon path-entangled states.
  arXiv  Detail & Related papers  (2023-03-27T15:32:55Z)
• Quantum Key Distribution Using a Quantum Emitter in Hexagonal Boron Nitride [48.97025221755422]
  We demonstrate a room temperature, discrete-variable quantum key distribution system using a bright single photon source in hexagonal-boron nitride. We have generated keys with one million bits length, and demonstrated a secret key of approximately 70,000 bits, at a quantum bit error rate of 6%. Our work demonstrates the first proof of concept finite-key BB84 QKD system realised with hBN defects.
  arXiv  Detail & Related papers  (2023-02-13T09:38:51Z)
• QUICK$^3$ -- Design of a satellite-based quantum light source for quantum communication and extended physical theory tests in space [73.86330563258117]
  Single photon source can enhance secure data rates in satellite-based quantum key distribution scenarios. payload is being integrated into a 3U CubeSat and scheduled for launch in 2024 into low Earth orbit.
  arXiv  Detail & Related papers  (2023-01-26T15:34:11Z)
• 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)
• Simulation of Entanglement Generation between Absorptive Quantum Memories [56.24769206561207]
  We use the open-source Simulator of QUantum Network Communication (SeQUeNCe), developed by our team, to simulate entanglement generation between two atomic frequency comb (AFC) absorptive quantum memories. We realize the representation of photonic quantum states within truncated Fock spaces in SeQUeNCe. We observe varying fidelity with SPDC source mean photon number, and varying entanglement generation rate with both mean photon number and memory mode number.
  arXiv  Detail & Related papers  (2022-12-17T05:51:17Z)
• 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)
• High-quality multi-wavelength quantum light sources on silicon nitride micro-ring chip [5.517255247747876]
  Multi-wavelength quantum light sources, especially at telecom band, are extremely desired in quantum information technology. Here we demonstrate a multiwavelength quantum light source using a silicon nitride micro-ring with a free spectral range of 200 GHz. The generation of eight pairs of correlated photons is ensured in a wavelength range of 25.6 nm.
  arXiv  Detail & Related papers  (2022-09-23T05:32:10Z)
• Ultrabright and narrowband intra-fiber biphoton source at ultralow pump power [51.961447341691]
  Nonclassical photon sources of high brightness are key components of quantum communication technologies. We here demonstrate the generation of narrowband, nonclassical photon pairs by employing spontaneous four-wave mixing in an optically-dense ensemble of cold atoms within a hollow-core fiber.
  arXiv  Detail & Related papers  (2022-08-10T09:04:15Z)
• Unimon qubit [42.83899285555746]
  Superconducting qubits are one of the most promising candidates to implement quantum computers. Here, we introduce and demonstrate a superconducting-qubit type, the unimon, which combines the desired properties of high non-linearity, full insensitivity to dc charge noise, insensitivity to flux noise, and a simple structure consisting only of a single Josephson junction in a resonator.
  arXiv  Detail & Related papers  (2022-03-11T12:57:43Z)
• Multi-bit quantum random number generator from path-entangled single photons [2.095553036791944]
  Measurement outcomes on quantum systems exhibit inherent randomness and are fundamentally nondeterministic. We present a scheme for the generation of multi-bit random numbers using path-entangled single photons.
  arXiv  Detail & Related papers  (2022-02-22T14:37:17Z)
• Precision tomography of a three-qubit donor quantum processor in silicon [38.42250061908039]
  Nuclear spins were among the first physical platforms to be considered for quantum information processing. We demonstrate universal quantum logic operations using a pair of ion-implanted 31P donor nuclei in a silicon nanoelectronic device.
  arXiv  Detail & Related papers  (2021-06-06T10:30:38Z)
• Certified quantum random number generator based on single-photon entanglement [0.0]
  We show a new certified quantum random number generator based on momentum-polarization entangled single photon states. A semi-device-independent modeling of the photonic quantum random number generator is developed. Our results show that a simple optical implementation combined with an accurate modeling provide an entanglement-based high-security quantum random number generator.
  arXiv  Detail & Related papers  (2021-04-09T16:01:25Z)
• Precise and extensive characterization of an optical resonator for cavity-based quantum networks [1.3209941988151326]
  Cavity-based quantum node is a competitive platform for distributed quantum networks. We characterize a high-finesse Fabry-Perot optical resonator for coupling single or few atomic quantum registers.
  arXiv  Detail & Related papers  (2021-02-11T05:39:53Z)
• Quantum cryptography with highly entangled photons from semiconductor quantum dots [0.0]
  We report on the first implementation of the BBM92 protocol using a quantum dot source with an entanglement fidelity as high as 0.97(1). For a proof of principle, the key generation is performed between two buildings, connected by 350 metre long fiber, resulting in an average key rate of 135 bits/s and a qubit error rate of 0.019 over a time span of 13 hours.
  arXiv  Detail & Related papers  (2020-07-24T18:21:11Z)
• Near-ideal spontaneous photon sources in silicon quantum photonics [55.41644538483948]
  Integrated photonics is a robust platform for quantum information processing. Sources of single photons that are highly indistinguishable and pure, that are either near-deterministic or heralded with high efficiency, have been elusive. Here, we demonstrate on-chip photon sources that simultaneously meet each of these requirements.
  arXiv  Detail & Related papers  (2020-05-19T16:46:44Z)
• On-demand indistinguishable single photons from an efficient and pure source based on a Rydberg ensemble [48.879585399382435]
  Single photons coupled to atomic systems have shown to be a promising platform for developing quantum technologies. Yet a bright on-demand, highly pure and highly indistinguishable single-photon source compatible with atomic platforms is lacking. In this work, we demonstrate such a source based on a strongly interacting Rydberg system.
  arXiv  Detail & Related papers  (2020-03-04T17:16:56Z)
• Quantum Random Number Generation using a Solid-State Single-Photon Source [89.24951036534168]
  Quantum random number generation (QRNG) harnesses the intrinsic randomness of quantum mechanical phenomena. We demonstrate QRNG with a quantum emitter in hexagonal boron nitride. Our results open a new avenue to the fabrication of on-chip deterministic random number generators.
  arXiv  Detail & Related papers  (2020-01-28T22:47:43Z)

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.