• Corpus ID: 145874879

Many-body entangled dynamics of closed and open systems for quantum simulators

  title={Many-body entangled dynamics of closed and open systems for quantum simulators},
  author={Daniel Jaschke},
When D-wave was founded in 1999, quantum computing was still an ambitious vision. In the past five years, quantum computing has moved from this vision to a very reachable goal with major companies such as Google, IBM, Intel, and Microsoft investigating quantum computation investing in this technology. Together with a vivid start-up scene including companies such as 1QBit, ionQ, Q-CTRL, QuantumCircuits, and Rigetti, they aim to develop hardware and software for a new generation of computers… 
Constructing k-local parent Lindbladians for matrix product density operators
Matrix product density operators (MPDOs) are an important class of states with interesting properties. Consequently, it is important to understand how to prepare these states experimentally. One
Quintet formation and exchange fluctuations: The role of stochastic resonance in singlet fission
Singlet fission describes the spin-conserving production of two triplet excitons from one singlet exciton. The existence of a spin-2 (quintet) triplet-pair state as a product of singlet fission is well


An open-system quantum simulator with trapped ions
This work combines multi-qubit gates with optical pumping to implement coherent operations and dissipative processes and illustrates the ability to engineer the open-system dynamics through the dissipative preparation of entangled states, the simulation of coherent many-body spin interactions, and the quantum non-demolition measurement of multi- qubit observables.
Engineered Open Systems and Quantum Simulations with Atoms and Ions
Quantum trajectories and open many-body quantum systems
The study of open quantum systems – microscopic systems exhibiting quantum coherence that are coupled to their environment – has become increasingly important in the past years, as the ability to
Quantum spin dynamics and entanglement generation with hundreds of trapped ions
It is shown that a two-dimensional “crystal” of around 200 9Be+ ions held together by magnetic and electric fields in a so-called Penning trap can simulate quantum magnetism, which sets the stage for simulations with more complicated forms of interaction that classical computers would find intractable.
Probing many-body dynamics on a 51-atom quantum simulator
This work demonstrates a method for creating controlled many-body quantum matter that combines deterministically prepared, reconfigurable arrays of individually trapped cold atoms with strong, coherent interactions enabled by excitation to Rydberg states, and realizes a programmable Ising-type quantum spin model with tunable interactions and system sizes of up to 51 qubits.
Breaking the 49-Qubit Barrier in the Simulation of Quantum Circuits
With the current rate of progress in quantum computing technologies, systems with more than 50 qubits will soon become reality. Computing ideal quantum state amplitudes for devices of such and larger
Observation of a many-body dynamical phase transition with a 53-qubit quantum simulator
Here, a quantum simulator composed of up to 53 qubits is used to study non-equilibrium dynamics in the transverse-field Ising model with long-range interactions, enabling the dynamical phase transition to be probed directly and revealing computationally intractable features that rely on the long- range interactions and high connectivity between qubits.
0.5 petabyte simulation of a 45-qubit quantum circuit
This work applies a scheduling algorithm to quantum supremacy circuits in order to reduce the required communication and simulate a 45-qubit circuit on the Cori II super-computer using 8, 192 nodes and 0.5 petabytes of memory, which constitutes the largest quantum circuit simulation to this date.
Quantum thermalization through entanglement in an isolated many-body system
Microscopy of an evolving quantum system indicates that the full quantum state remains pure, whereas thermalization occurs on a local scale, whereas entanglement creates local entropy that validates the use of statistical physics for local observables.
The dissipative Bose-Hubbard model
Open many-body quantum systems have attracted renewed interest in the context of quantum information science and quantum transport with biological clusters and ultracold atomic gases. The physical