AG Quantum Optics and Spectroscopy

Quantum simu­la­tors get error bars

Researchers have devel­oped a method for deter­mining the accu­racy of quantum simu­la­tions. The new method not only recon­structs the dynamics of a quantum system from exper­i­mental data, but can also quan­tify the uncer­tainty of the predic­tions derived from it. The veri­fi­ca­tion method was demon­strated in Inns­bruck, Austria, on an ion-trap quantum computer with up to 51 qubits.

Not all quantum measure­ments are created equal

Proving that one quantum measure­ment is more powerful than another has long been diffi­cult. Physi­cists from Hein­rich Heine Univer­sity Düssel­dorf, Lund Univer­sity, and the Univer­sity of Inns­bruck have now devel­oped and demon­strated a simple tech­nique to certify that a certain class of measure­ments has prop­er­ties that cannot be mimicked by simpler means.

Quan­tum com­put­ing with­out inter­rup­tions

Mid-circuit measure­ments are one of the biggest prac­tical hurdles in quantum error correc­tion on encoded qubits. Researchers in Inns­bruck and Aachen have now proposed and exper­i­men­tally demon­strated that a universal fault-tolerant quantum algo­rithm can be exe­cuted without such measure­ments.

Michael Meth receives his PhD

Mike success­fully defended his PhD thesis on Quantum simu­la­tion with trapped-ion qudits.

Congrat­u­la­tions, Mike!

Michael Raffetseder receives his Masters

Michael Raffetseder finished his Masters with his thesis Optical inte­gra­tion for surface ion
traps. Congrat­u­la­tions, Michael!

Welcome Mariia Panina

Welcome Mariia! Mari­ia wrote her bach­e­lor’s thesis on simu­la­tions of Raman processes in CaH+. For her master's project, she will work in the QCosmo group to study rovi­bra­tional cooling of CaOH+.