no code implementations • 30 Aug 2023 • Patryk Lipka-Bartosik, Martí Perarnau-Llobet, Nicolas Brunner
Such a machine, which we term a "thermodynamic neuron", can implement any linearly-separable function, and we discuss explicitly the cases of NOT, 3-majority and NOR gates.
1 code implementation • 15 Dec 2021 • Antoine Girardin, Nicolas Brunner, Tamás Kriváchy
Finding the closest separable state to a given target state is a notoriously difficult task, even more difficult than deciding whether a state is entangled or separable.
no code implementations • 27 Jan 2021 • Shishir Khandelwal, Nicolas Brunner, Géraldine Haack
Viewing a quantum thermal machine as a non-Hermitian quantum system, we characterize in full generality its analytical time-dependent dynamics by deriving the spectrum of its non-Hermitian Liouvillian for an arbitrary initial state.
Quantum Physics Mesoscale and Nanoscale Physics Mathematical Physics Mathematical Physics
no code implementations • 11 Nov 2020 • Tamás Kriváchy, Yu Cai, Joseph Bowles, Daniel Cavalcanti, Nicolas Brunner
Given the optimization constraints as an input, a neural network outputs values for the optimization parameters such that the constraints are satisfied, both for the primal and the dual formulations of the task.
no code implementations • 8 Sep 2020 • Gonzalo Manzano, Rafael Sánchez, Ralph Silva, Géraldine Haack, Jonatan B. Brask, Nicolas Brunner, Patrick P. Potts
Thermal machines perform useful tasks--such as producing work, cooling, or heating--by exchanging energy, and possibly additional conserved quantities such as particles, with reservoirs.
Quantum Physics Statistical Mechanics
1 code implementation • 24 Jul 2019 • Tamás Kriváchy, Yu Cai, Daniel Cavalcanti, Arash Tavakoli, Nicolas Gisin, Nicolas Brunner
As such, the neural network acts as an oracle, demonstrating that a behavior is classical if it can be learned.
1 code implementation • 12 Mar 2013 • Nicolas Brunner, Daniel Cavalcanti, Stefano Pironio, Valerio Scarani, Stephanie Wehner
In the last two decades, Bell's theorem has been a central theme of research from a variety of perspectives, mainly motivated by quantum information science, where the nonlocality of quantum theory underpins many of the advantages afforded by a quantum processing of information.
Quantum Physics
no code implementations • 23 Jun 2006 • Valerio Scarani, Nicolas Gisin, Nicolas Brunner, Lluis Masanes, Sergi Pino, Antonio Acin
The usual security proofs suppose that the authorized partners, Alice and Bob, have a perfect knowledge and control of their quantum systems and devices; for instance, they must be sure that the logical bits have been encoded in true qubits, and not in higher-dimensional systems.
Quantum Physics