The seminar will present experimental studies of wavepacket propagation in a dissipative engineered quantum chain. The work implements a non-Hermitian synthetic lattice with an abrupt interface between dissipative and non-dissipative sub-chains, using the hyperfine manifold states of an Rb-87 Bose–Einstein condensate. By tuning the dissipation strength, the researchers observed the crossover between ballistic propagation, near-perfect absorption, and quantum Zeno reflection. Numerical simulations revealed that optimal absorption occurs when tunneling and dissipation are properly matched.
About the speaker
Prof. Spielman's research focuses on ultracold atoms, quantum gases, synthetic magnetic fields, and engineered open quantum systems. His group pioneered the creation of artificial magnetic and electric fields for neutral atoms, enabling table-top studies of the quantum Hall effect, topological phases, and other complex quantum phenomena.
More information about the research group: Spielman Research Group
Seminar will take place on 1 June14:00 val. at NFTMC D401 auditorium.
This seminar is part of the "Sunrise Valley Quantum Research Seminars" series.
Organizers: Faculty of Physics, Vilnius University, Center for Physical Sciences and Technology, Lithuanian Quantum Technologies Association, Lithuanian Physical Society.