Projects

• Spectroscopy of entangled states of clusters of rare-earth impurity ions for quantum computing
• Compilation, optimization, and resource estimation of quantum computations (part of PRG 946)
• NordiQuEst (establish a “nordic” quantum computing cloud platform for users to access quantum computing devices and HPC-powered quantum circuit simulators)
• NeQst (Quantum computing applied to industrial optimization problems)

Preprints

Output of Quantum Computing research at the University of Tartu

This is updated very infrequently, sorry ☹️

arXiv:2112.14669
Optimality of Finite Parameter Shift Rules for Derivatives of Variational Quantum Circuits
Dirk Oliver Theis arXiv:2103.13319
Fast qubits of optical frequencies on the rare-earth ions in fluoride crystals and color centers in diamond
Vladimir Hizhnyakov, Vadim Boltrushko, Aleksander Shelkan, Yurii Orlovskii arXiv:2101.07792 (Optics Communications)
Rare earth ions doped mixed crystals for fast quantum computers with optical frequency qubits
Vladimir Hizhnyakov, Vadim Boltrushko, Helle Kaasik, Yurii Orlovskii arXiv:1903.12611
Information content of queries in training Parameterized Quantum Circuits
Bahman Ghandchi, Dirk Oliver Theis arXiv:1901.11434 (Frontiers in Physics)
Input Redundancy for Parameterized Quantum Circuits
Javier Gil Vidal, Dirk Oliver Theis arXiv:1812.06323
Calculus on parameterized quantum circuits
Javier Gil Vidal, Dirk Oliver Theis arXiv:1810.10759
Note on (active-)QRAM-style data access as a quantum circuit
Tore Vincent Carstens, Dirk Oliver Theis

Publications without preprint

Journal of Luminescence (2019)
Spectroscopic evidence of cooperative (entangled) quantum states of Nd3+ ion pairs in Nd3+: LaF3 crystal
Yurii Orlovskii, Helge Gross, Elena Vinogradova, Vadim Boltrushko, Vladimir Hizhnyakov