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12 papers · 2 filters
Photonic Kondo model
Mikhail Pletyukhov, Niclas Müller, Vladimir Gritsev
Here we introduce and study a photonic analogue of the Kondo model. The model is defined as a far detuned regime of photonic scattering off a three-level emitter in a -type conf…
Simultaneous measurement of two non-commuting quantum variables: Solution of a dynamical model
Martí Perarnau-Llobet, Theo M. Nieuwenhuizen
The possibility of performing simultaneous measurements in quantum mechanics is investigated in the context of the Curie-Weiss model for a projective measurement. Concretely, we co…
The Need for Structure in Quantum LDPC Codes
Lior Eldar, Maris Ozols, Kevin F. Thompson
Existence of quantum low-density parity-check (LDPC) codes whose minimal distance scales linearly with the number of qubits is a major open problem in quantum information. Its prac…
Non-ergodicity in the Anisotropic Dicke model
Wouter Buijsman, Vladimir Gritsev, Rudolf Sprik
We study the ergodic -- non-ergodic transition in a generalized Dicke model with independent co- and counter rotating light-matter coupling terms. By studying level statistics, the…
Multipartite Entanglement in Stabilizer Tensor Networks
Sepehr Nezami, Michael Walter
Despite the fundamental importance of quantum entanglement in many-body systems, our understanding is mostly limited to bipartite situations. Indeed, even defining appropriate noti…
Optimal Quantum Sample Complexity of Learning Algorithms
Srinivasan Arunachalam, Ronald de Wolf
In learning theory, the VC dimension of a concept class is the most common way to measure its "richness." In the PAC model $$ Θ\Big(\frac{d}{\…