Detectors Archives - IEEE Transactions on Quantum Engineering

Impact of High-Brightness Entangled Photon Pairs on CHSH Inequality Experiment

March 30, 2026Jin-Woo Kim, Heonoh Kim, June Koo Kevin RheeOpen AccessAttenuation, Brightness, Correlation, Detectors, Mathematical models, Photonics, Quantum entanglement, Quantum mechanics, Satellites, Standards

Abstract: Verifying the violation of Bell’s inequality is one of the most representative methods to demonstrate that entangled photon pairs prepared in a quantum optics-based system exhibit quantum properties. While experiments on Bell inequality violations have been theoretically well-established and extensively conducted to implement various quantum information technologies in laboratory settings, mathematical modeling for systematically […]

Differential Phase Encoded Plug-and-Play Measurement-Device-Independent Quantum Key Distribution

February 16, 2026Nilesh Sharma, Shashank Kumar Ranu, Prabha Mandayam, Anil PrabhakarQuantum InformationDetectors, Encoding, Frequency modulation, Interference, Laser beams, Mirrors, Phase measurement, Protocols, Quantum key distribution, Security

Abstract: Measurement-device-independent quantum key distribution (MDI-QKD) enhances security by removing vulnerabilities associated with detector side channels. Real-world implementations ofMDI-QKD face practical challenges, such as channel asymmetry and physical imperfections, which degrade the visibility of Hong–Ou–Mandel interference, an essential factor in determining the secure key rate. In this work, we evaluate the performance of differential phase […]

Realistic Quantum Network Simulation for Experimental BBM92 Key Distribution

February 9, 2026Michelle Chalupnik, Brian Doolittle, Suparna Seshadri, Eric G. Brown, Keith Kenemer, Daniel Winton, Daniel Sanchez-Rosales, Matthew Skrzypczyk, Cara Alexander, Eric Ostby, Michael CubedduQuantum InternetDetectors, Discrete event simulation, Encryption, Measurement by laser beam, Optical fiber networks, Photonics, Protocols, Quantum entanglement, Quantum networks, Qubit

Abstract: Quantum key distribution (QKD) can provide secure key material between two parties without relying on assumptions about the computational power of an eavesdropper. QKD is performed over quantum links and quantum networks, systems which are resource-intensive to deploy and maintain. To evaluate and optimize performance prior to, during, and after deployment, accurate simulations with […]

Control of a Josephson Digital Phase Detector via an SFQ-Based Flux Bias Driver

June 26, 2025Laura Di Marino; Luigi Di Palma; Michele Riccio; Francesco Fienga; Marco Arzeo; Oleg MukhanovQuantum ComputingDetectors, Integrated circuit modeling, Josephson junctions, Microwave theory and techniques, Noise, Oscillators, Phase detection, Qubit, Superconducting microwave devices, Switches

Abstract: Quantum computation requires high-fidelity qubit readout, preserving the quantum state. In the case of superconductings qubits, readout is typically performed using a complex analog experimental setup operating at room temperature, which poses significant technological and economic barriers to large system scalability. An alternative approach is to perform a cryogenic on-chip qubit readout based on […]

Observing the Poisson Distribution of a Coherent Microwave Field With a Parametric Photon Detector

March 11, 2025Jiaming Wang, Kirill Petrovnin, Pertti J. Hakonen, Gheorghe Sorin ParaoanuQuantum Sensing & MetrologyDetectors, Josephson junctions, Microwave amplifiers, Microwave imaging, Microwave technology, Optical detectors, Photon detectors, Probes, Superconducting microwave devices, Superconducting photodetectors

Abstract: Single-photon detectors are essential for implementing optical quantum technologies, such as quantum key distribution, and for enhancing optical imaging systems such as lidar, while also playing a crucial role in studying the statistical properties of light. In this work, we show how the underlying photon statistics can be revealed by using a threshold detector, […]

Observing the Poisson Distribution of a Coherent Microwave Field With a Parametric Photon Detector

Single-photon detectors are essential for implementing optical quantum technologies, such as quantum key distribution, and for enhancing optical imaging systems such as lidar, while also playing a crucial role in studying the statistical properties of light. In this work, we show how the underlying photon statistics can be revealed by using a threshold detector, implemented […]

Superconducting Nanostrip Photon-Number-Resolving Detector as an Unbiased Random Number Generator

July 22, 2024Pasquale Ercolano, Mikkel Ejrnaes, Ciro Bruscino, Syed Muhammad Junaid Bukhari, Daniela Salvoni, Chengjun Zhang, Jia Huang, Hao Li, Lixing You, Loredana Parlato, Giovanni Piero PepeRegularDetectors, Geometry, Optical switches, Photonics, Strips, Superconducting photodetectors, Temperature measurement

Detectors capable of resolving the number of photons are essential in many applications, ranging from classic photonics to quantum optics and quantum communication. In particular, photon-number-resolving detectors based on arrays of superconducting nanostrips can offer a high detection efficiency, a low dark count rate, and a recovery time of a few nanoseconds. In this work, […]

Superconducting Nanostrip Photon-Number-Resolving Detector as an Unbiased Random Number Generator

July 22, 2024Pasquale Ercolano, Mikkel Ejrnaes, Ciro Bruscino, Syed Muhammad Junaid Bukhari, Daniela Salvoni, Chengjun Zhang, Jia Huang, Hao Li, Lixing You, Loredana Parlato, Giovanni Piero PepeQuantum InternetDetectors, Geometry, Optical switches, Photonics, Strips, Superconducting photodetectors, Temperature measurement

Continuous-Variable Quantum Secret Sharing in Fast-Fluctuating Channels

October 9, 2023Fangli YangQuantum Networking & CommunicationsChannel estimation, Detectors, Particle measurements, Probability distribution, Protocols, Quantum state, Security

Recently, several continuous-variable quantum secret sharing (CV-QSS) protocols were proposed, while most of them are limited to the fiber channel systems with a relatively stable transmissivity. However, by means of complex channels, the transmissivity fluctuates dramatically in time with a probability distribution, which will lead to a fast-fluctuating attack. Therefore, the security analysis of CV-QSS […]

Time Binning Method for Nonpulsed Sources Characterization With a Superconducting Photon Number Resolving Detector

September 19, 2023Pasquale ErcolanoQuantum EngineeringDetectors, High-temperature superconductors, Light sources, Photonics, Recording, Superconducting integrated circuits, Superconducting photodetectors

Photon number resolving detectors find space in many fields, such as quantum optics, boson sampling, and fluorescence spectroscopy. In particular, the reconstruction of the input photon distribution is essential in quantum communications to detect photon-number-splitting attacks. In this work, we discuss the operation configurations of a photon number resolving detector based on superconducting nanostrips at […]