51 citations · 169 across the 10 of their papers we have counts for
10 papers
Lecture Notes on Quantum Electrical Circuits
Alessandro Ciani, David P. DiVincenzo, Barbara M. Terhal
During the last 30 years, stimulated by the quest to build superconducting quantum processors, a theory of quantum electrical circuits has emerged and this theory goes under the na…
Homological Quantum Rotor Codes: Logical Qubits from Torsion
Christophe Vuillot, Alessandro Ciani, Barbara M. Terhal
We formally define homological quantum rotor codes which use multiple quantum rotors to encode logical information. These codes generalize homological or CSS quantum codes for qubi…
Microwave-activated gates between a fluxonium and a transmon qubit
Alessandro Ciani, Boris M. Varbanov, Nicolas Jolly +2
We propose and analyze two types of microwave-activated gates between a fluxonium and a transmon qubit, namely a cross-resonance (CR) and a CPHASE gate. The large frequency differe…
Error mitigation and quantum-assisted simulation in the error corrected regime
Matteo Lostaglio, Alessandro Ciani
A standard approach to quantum computing is based on the idea of promoting a classically simulable and fault-tolerant set of operations to a universal set by the addition of `magic…
Stoquasticity in circuit QED
Alessandro Ciani, Barbara M. Terhal
We analyze whether circuit-QED Hamiltonians are stoquastic focusing on systems of coupled flux qubits: we show that scalable sign-problem free path integral Monte Carlo simulations…
Hardware-Encoding Grid States in a Non-Reciprocal Superconducting Circuit
Martin Rymarz, Stefano Bosco, Alessandro Ciani +1
We present a circuit design composed of a non-reciprocal device and Josephson junctions whose ground space is doubly degenerate and the ground states are approximate codewords of t…