Time and frequency as quantum continuous variables

N Fabre, A Keller, P Milman - Physical Review A, 2022 - APS
We present a second quantization description of frequency-based continuous variables
quantum computation in the subspace of single photons. For this, we define frequency and …

All-photonic architecture for scalable quantum computing with greenberger-horne-zeilinger states

S Omkar, SH Lee, YS Teo, SW Lee, H Jeong - PRX Quantum, 2022 - APS
Linear optical quantum computing is beset by the lack of deterministic entangling operations
besides photon loss. Motivated by advancements at the experimental front in deterministic …

Evidence-based certification of quantum dimensions

YS Teo, SU Shringarpure, H Jeong, N Prasannan… - Physical review …, 2024 - APS
Identifying a reasonably small Hilbert space that completely describes an unknown quantum
state is crucial for efficient quantum information processing. We introduce a general …

Relative-belief inference in quantum information theory

YS Teo, SU Shringarpure, H Jeong, N Prasannan… - Physical Review A, 2024 - APS
We introduce the framework of Bayesian relative belief that directly evaluates whether or not
the experimental data at hand support a given hypothesis regarding a quantum system by …

Quantum polarimetry

AZ Goldberg - Progress in Optics, 2022 - Elsevier
Polarization is one of light's most versatile degrees of freedom for both classical and
quantum applications. The ability to measure light's state of polarization and changes …

Spectral single photons characterization using generalized Hong–Ou–Mandel interferometry

N Fabre - Journal of Modern Optics, 2022 - Taylor & Francis
We propose new methods to characterize the spectral-temporal distribution of single
photons. The presented protocols take advantage of spectral filtering, frequency …

Generalized description of the spatio-temporal biphoton state in spontaneous parametric down-conversion

B Baghdasaryan, C Sevilla-Gutiérrez, F Steinlechner… - Physical Review A, 2022 - APS
Spontaneous parametric down-conversion (SPDC) is a widely used source for photonic
entanglement. Years of focused research have led to a solid understanding of the process …

Optical time-domain quantum state tomography on a subcycle scale

E Hubenschmid, TLM Guedes, G Burkard - arXiv preprint arXiv …, 2023 - arxiv.org
Following recent progress in the experimental application of electro-optic sampling to the
detection of the quantum fluctuations of the electromagnetic-field ground state and …

Pulse characterization at the single-photon level through chronocyclic -function measurements

A Bhattacharjee, L Serino, J Řeháček, Z Hradil… - arXiv preprint arXiv …, 2024 - arxiv.org
The characterization of the complex spectral amplitude that is, the spectrum and spectral
phase, of single-photon-level light fields is a crucial capability for modern photonic quantum …

Quantum state tomography of qudits via Hong-Ou-Mandel interference

Y Tsujimoto, R Ikuta, K Wakui, T Kobayashi… - Physical Review …, 2023 - APS
We propose a method to perform the quantum state tomography (QST) of an n-partite qudit
state embedded in single photons based on the Hong-Ou-Mandel interference between the …