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Quantum reference frame transformations have been proposed to provide a means by which to translate descriptions of quantum systems relative to each other. At present, there are several differing frameworks for describing quantum reference…

Quantum Physics · Physics 2025-09-29 Esteban Castro-Ruiz , Thomas D. Galley , Leon Loveridge

Two methods for creating arbitrary two-photon polarization pure states are introduced. Based on these, four schemes for creating two-photon polarization mixed states are proposed and analyzed. The first two schemes can synthesize completely…

In [1] we proved a strengthened Kochen-Specker theorem in 3 dimensions: non-contextual hidden variable (NCHV) models cannot reproduce all the quantum correlations of two compatible observables, which is a minimal requirement imposed on the…

Quantum Physics · Physics 2011-12-26 Sixia Yu , C. H. Oh

The Kochen-Specker no-go theorem established that hidden-variable theories in quantum mechanics necessarily admit contextuality. This theorem is formally stated in terms of the partial Boolean algebra structure of projectors on a Hilbert…

Quantum Physics · Physics 2026-03-02 Anuj Dawar , Nihil Shah

The novel experimental realization of three-state optical quantum systems is presented. We use the polarization state of biphotons,propagating in single frequency- and spatial mode, to generate an arbitrary qutrits. In particular the…

Quantum Physics · Physics 2009-11-10 Yu. I. Bogdanov , M. V. Chekhova , S. P. Kulik , G. A. Maslennikov , C. H. Oh , M. K. Tey

Electrical engineers and physicists are naturally very interested in noise in circuits, amplifiers and detectors. With the advent of quantum computation and other high frequency electronics operating at low temperatures, we have entered a…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 R. J. Schoelkopf , A. A. Clerk , S. M. Girvin , K. W. Lehnert , M. H. Devoret

Based on Luttinger's formulation the complex optical conductivity tensor is calculated within the framework of the spin-polarized relativistic screened Korringa-Kohn-Rostoker method for layered systems by means of a contour integration…

Materials Science · Physics 2009-11-07 A. Vernes , L. Szunyogh , P. Weinberger

This paper addresses the problem of single-channel speech separation, where the number of speakers is unknown, and each speaker may speak multiple utterances. We propose a speech separation model that simultaneously performs separation,…

Audio and Speech Processing · Electrical Eng. & Systems 2025-05-23 Yuzhu Wang , Archontis Politis , Konstantinos Drossos , Tuomas Virtanen

The existence of large sets of Kirkman triple systems (LKTSs) is one of the best-known open problems in combinatorial design theory. Steiner quadruple systems with resolvable derived designs (RDSQSs) play an important role in the recursive…

Combinatorics · Mathematics 2023-02-14 Yan Liu , Jianguo Lei

So far, various multi-photon entangled states have been observed experimentally by using different experimental set-ups. Here, we present a scheme to realize many SLOCC-inequivalent states of three and four qubits via projective…

Quantum Physics · Physics 2009-02-17 Witlef Wieczorek , Nikolai Kiesel , Christian Schmid , Harald Weinfurter

A perfect strategy is one that allows the mutually in-communicated players of a nonlocal game to win every trial of the game. Perfect strategies are basic tools for some fundamental results in quantum computation and crucial resources for…

Quantum Physics · Physics 2024-08-02 Stefan Trandafir , Junior R. Gonzales-Ureta , Adán Cabello

A keyword spotting (KWS) system determines the existence of, usually predefined, keyword in a continuous speech stream. This paper presents a query-by-example on-device KWS system which is user-specific. The proposed system consists of two…

Machine Learning · Computer Science 2020-01-15 Byeonggeun Kim , Mingu Lee , Jinkyu Lee , Yeonseok Kim , Kyuwoong Hwang

Using a recently introduced framework, we derive criteria for quantum k-separability, which are very easily computed. In the case k = 2, our criteria are equally strong to the best methods known so far, while in all other cases there are…

Quantum Physics · Physics 2010-08-16 Andreas Gabriel , Beatrix C. Hiesmayr , Marcus Huber

We propose a kind of reverse Kochen-Specker theorem that amounts to generating orthomodular lattices (OMLs) with exactly one state that do not admit properties of the Hilbert space. We apply MMP algorithms to obtain smallest OMLs with 35…

Quantum Physics · Physics 2010-03-02 Mladen Pavicic

The class of $\left(\binom{n+1}{2}_{n-1} \binom{n+1}{3}_3\right)$-configurations which contain at least $n-2$ $K_n$-graphs coincides with the class of so called systems of triangle perspectives i.e. of configurations which contain a bundle…

Combinatorics · Mathematics 2014-04-17 K. Petelczyc , M. Prażmowska , K. Prażmowski

We obtain the number of different Steiner triple systems S(2^m-1,3,2) of rank 2^m-m+2 over the field GF(2).

Combinatorics · Mathematics 2018-04-18 Dmitrii Zinoviev

Existing keyword spotting (KWS) systems primarily rely on predefined keyword phrases. However, the ability to recognize customized keywords is crucial for tailoring interactions with intelligent devices. In this paper, we present a novel…

Computation and Language · Computer Science 2024-11-26 Zhenyu Wang , Shuyu Kong , Li Wan , Biqiao Zhang , Yiteng Huang , Mumin Jin , Ming Sun , Xin Lei , Zhaojun Yang

We present a methodology to train our multi-speaker emotional text-to-speech synthesizer that can express speech for 10 speakers' 7 different emotions. All silences from audio samples are removed prior to learning. This results in fast…

Computation and Language · Computer Science 2021-12-08 Sungjae Cho , Soo-Young Lee

Reducing the many-fermion problem to a set of single-particle (s.p.) equations, the Kohn-Sham (KS) theory has provided a practical tool to implement \textit{ab initio} calculations of ground-state energies and densities in many-electron…

Quantum Physics · Physics 2023-09-18 H. Nakada

Quantum contextuality is one of the fundamental notions in quantum mechanics. Proofs of the Kochen-Specker theorem and noncontextuality inequalities are two means for revealing the contextuality phenomenon in quantum mechanics. It has been…

Quantum Physics · Physics 2015-09-08 Xiao-Dong Yu , Yan-Qing Guo , D. M. Tong