OPEN QUANTUM SYSTEMS

WHAT ARE THEY?
All quantum systems are continuously exposed to and interact with their surroundings. Examples are electrons interacting with the electromagnetic field, atoms interacting with light (photons) or with crystal vibrations (phonons), impurities in a lattice interacting with nuclear spins of the atoms in the lattice. Generally, system-environment interaction leads to loss of quantum properties of the open system, and to the quantum to classical transition.
OUR RESEARCH
Our current research lines on open quantum systems include:
  1. Characterization, engineering and control of non-Markovian open quantum systems
  2. Exploiting memory effects for quantum information tasks
  3. Quantum Zeno effect, dynamical decoupling and reservoir engineering for qubits and CV systems
  4. Decoherence induced by gravitational time dilation and non-Markovian Unruh effect.
  5. Quantum Darwinism and the quantum to classical transition
REFERENCES
​Z.-D. Liu, H. Lyyra, Y.-N. Sun, B.-H. Liu, C.-F. Li, G.-C. Guo, S. Maniscalco, J. Piilo: Experimental implementation of fully controlled dephasing dynamics and synthetic spectral densities. Nature Communications 9, 3453 (2018) [arXiv].

S. Hamedani Raja, M. Borrelli, R. Schmidt, J. P. Pekola, S. Maniscalco: Thermodynamic fingerprints of non-Markovianity in a system of coupled superconducting qubits. Phys. Rev. A 97, 032133 (2018) [arXiv].

J. Teittinen, H. Lyyra, B. Sokolov, S. Maniscalco: Revealing memory effects in phase-covariant quantum master equations. New J. Phys. 20, 073012 (2018) [arXiv].

B. Sokolov, I. Vilja, S. Maniscalco: Quantum to classical transition induced by gravitational time dilation. Phys. Rev. A 96, 012126 (2017) [arXiv].

D. Chruściński, C. Macchiavello, S. Maniscalco: Detecting Non-Markovianity of Quantum Evolution via Spectra of Dynamical Maps. Phys. Rev. Lett. 118, 080404 (2017) [arXiv].

D. Chruściński, S. Maniscalco: Degree of Non-Markovianity of Quantum Evolution. Phys. Rev. Lett. 112, 120404 (2014) [arXiv].
COLLABORATIONS
  1. Prof. Dariusz Chruściński, Nicolaus Copernicus University, Torun, Poland
  2. Dr. Jyrki Piilo, University of Turku
  3. Dr. Iiro Vilja, University of Turku
  4. Prof. Matteo Paris, University of Milano, Milano, Italy
  5. Dr. Francesco Plastina, Universita’ della Calabria, Cosenza, Italy
  6. Dr. Roberta Zambrini, University of Balearic Islands, Palma de Mallorca, Spain
  7. CAS, key laboratory of quantum information, USTC, Hefei, China
CONTACT PERSON
Prof. Sabrina Maniscalco (smanis[at]utu.fi)