Deterministic generation of frequency-bin-encoded microwave photons

  1. Jiaying Yang,
  2. Maryam Khanahmadi,
  3. Ingrid Strandberg,
  4. Akshay Gaikwad,
  5. Claudia Castillo Moreno,
  6. Anton Frisk Kockum,
  7. Muhammad Asad Ullah,
  8. Göran Johansson,
  9. Axel Martin Eriksson,
  10. and Simone Gasparinetti
A distributed quantum computing network requires a quantum communication channel between spatially separated processing units. In superconducting circuits, such a channel can be implemented

Direct detection of quasiparticle tunneling with a charge-sensitive superconducting sensor coupled to a waveguide

  1. Kazi Rafsanjani Amin,
  2. Axel M. Eriksson,
  3. Mikael Kervinen,
  4. Linus Andersson,
  5. Robert Rehammar,
  6. and Simone Gasparinetti
Detecting quasiparticle tunneling events in superconducting circuits provides information about the population and dynamics of non-equilibrium quasiparticles. Such events can be detected

Quantum refrigeration powered by noise in a superconducting circuit

  1. Simon Sundelin,
  2. Mohammed Ali Aamir,
  3. Vyom Manish Kulkarni,
  4. Claudia Castillo Moreno,
  5. and Simone Gasparinetti
While dephasing noise frequently presents obstacles for quantum devices, it can become an asset in the context of a Brownian-type quantum refrigerator. Here we demonstrate a novel quantum

Deterministic generation of shaped single microwave photons using a parametrically driven coupler

  1. Jiaying Yang,
  2. Axel Eriksson,
  3. Mohammed Ali Aamir,
  4. Ingrid Strandberg,
  5. Claudia Castillo Moreno,
  6. Daniel Perez Lozano,
  7. Per Persson,
  8. and Simone Gasparinetti
A distributed quantum computing system requires a quantum communication channel between spatially separated processing units. In superconducting circuits, such a channel can be realized

Measurement and control of a superconducting quantum processor with a fully-integrated radio-frequency system on a chip

  1. Mats O. Tholén,
  2. Riccardo Borgani,
  3. Giuseppe Ruggero Di Carlo,
  4. Andreas Bengtsson,
  5. Christian Križan,
  6. Marina Kudra,
  7. Giovanna Tancredi,
  8. Jonas Bylander,
  9. Per Delsing,
  10. Simone Gasparinetti,
  11. and David B. Haviland
We describe a digital microwave platform called Presto, designed for measurement and control of multiple quantum bits (qubits) and based on the third-generation radio-frequency system

Engineering symmetry-selective couplings of a superconducting artificial molecule to microwave waveguides

  1. Mohammed Ali Aamir,
  2. Claudia Castillo Moreno,
  3. Simon Sundelin,
  4. Janka Biznárová,
  5. Marco Scigliuzzo,
  6. Kowshik Erappaji Patel,
  7. Amr Osman,
  8. D. P. Lozano,
  9. and Simone Gasparinetti
Tailoring the decay rate of structured quantum emitters into their environment opens new avenues for nonlinear quantum optics, collective phenomena, and quantum communications. Here

Robust preparation of Wigner-negative states with optimized SNAP-displacement sequences

  1. Marina Kudra,
  2. Mikael Kervinen,
  3. Ingrid Strandberg,
  4. Shahnawaz Ahmed,
  5. Marco Scigliuzzo,
  6. Amr Osman,
  7. Daniel Pérez Lozano,
  8. Giulia Ferrini,
  9. Jonas Bylander,
  10. Anton Frisk Kockum,
  11. Fernando Quijandría,
  12. Per Delsing,
  13. and Simone Gasparinetti
Hosting non-classical states of light in three-dimensional microwave cavities has emerged as a promising paradigm for continuous-variable quantum information processing. Here we experimentally

Nonequilibrium heat transport and work with a single artificial atom coupled to a waveguide: emission without external driving

  1. Yong Lu,
  2. Neill Lambert,
  3. Anton Frisk Kockum,
  4. Ken Funo,
  5. Andreas Bengtsson,
  6. Simone Gasparinetti,
  7. Franco Nori,
  8. and Per Delsing
We observe the continuous emission of photons into a waveguide from a superconducting qubit without the application of an external drive. To explain this observation, we build a two-bath

Primary thermometry of propagating microwaves in the quantum regime

  1. Marco Scigliuzzo,
  2. Andreas Bengtsson,
  3. Jean-Claude Besse,
  4. Andreas Wallraff,
  5. Per Delsing,
  6. and Simone Gasparinetti
The ability to control and measure the temperature of propagating microwave modes down to very low temperatures is indispensable for quantum information processing, and may open opportunities

Universal Gate Set for Continuous-Variable Quantum Computation with Microwave Circuits

  1. Timo Hillmann,
  2. Fernando Quijandría,
  3. Göran Johansson,
  4. Alessandro Ferraro,
  5. Simone Gasparinetti,
  6. and Giulia Ferrini
We provide an explicit construction of a universal gate set for continuous-variable quantum computation with microwave circuits. Such a universal set has been first proposed in quantum-optical