Realization of a Minimal Disturbance Quantum Measurement

Nonunity gain minimal-disturbance measurement

On minimal realization of IF-languages: A categorical approach

he purpose of this work is to introduce and study the concept of minimal deterministic automaton with IF-outputs which realizes the given IF-language. Among two methods for construction of such automaton presented here, one is based on Myhill-Nerode's theory while the other is based on derivatives of the given IF-language. Meanwhile, the categories of deterministic automata with IF-outputs and ...

Probabilistic minimal disturbance measurement of symmetrical qubit states

R. Filip, L. Mišta, Jr., F. De Martini, M. Ricci, and F. Sciarrino Department of Optics, Palacký University, 17. listopadu 50, Olomouc 772 00, Czech Republic Dipartimento di Fisica, Università di Roma “La Sapienza,” Piazzale Aldo Moro 5, Roma 00185, Italy Centro Studi e Ricerche “Enrico Fermi,” Via Panisperna 89/A Compendio del Viminale, Roma 00184, Italy Received 4 May 2006; published 8 Novemb...

Realization of Minimal Supergravity

Minimal supergravity mediation of supersymmetry breaking has attracted much attention due to its simplicity, which leads to its predictive power. We consider how Nature possibly realizes minimal supergravity through inflationary selection of the theory. Minimality is impressively consistent with the present observational bounds and it might be tested with the aid of low-energy soft parameters o...

“No Information Without Disturbance”: Quantum Limitations of Measurement

In this contribution I review rigorous formulations of a variety of limitations of measurability in quantum mechanics. To this end I begin with a brief presentation of the conceptual tools of modern measurement theory. I will make precise the notion that quantum measurements necessarily alter the system under investigation and elucidate its connection with the complementarity and uncertainty pr...