Bosonic Quantum Information
Quantum bits (qubits) - the fundamental units of information in a quantum computer – are inherently fragile and their information is easily lost over time leading to errors in the computation. Extending the time over which this information can be faithfully retained is a crucial frontier of current research. Bosonic quantum error correction tackles this challenge by encoding an intrinsically error-protected qubit into the energy levels of a harmonic oscillator drawing on the notion of non-locality in oscillator phase space.
In our research, we develop new ways to store and manipulate quantum information in nonlinear superconducting oscillators. A key element of our work is to make use of the many energy levels present in these oscillators to encode qubits that are intrinsically protected against errors. To do this we devise and implement new parametric processes in nonlinear quantum oscillators in order to stabilize the highly excited basis states of these qubits. Our goal is to explore both the promise of this approach for quantum information processing, as well as its fundamental aspects in the context of out-of-equilibrium physics.
Open positions
Master and semester projects:
We often have Master or semester projects available. Don't hesitate to reach out to Alex to discuss joining us and participating in our research.
Open postdoctoral position:
We are looking for a motivated researcher with experience or interest in circuit QED, quantum information processing, and nonlinear quantum optics. Our work involves a wide range of experimental skills including:
- Cryogenics and operation of dilution refrigerators
- Microwave circuit design
- Nanofabrication and characterization
- Experimental control and data analysis software
- Quantum measurement and control techniques
As a member of our team you will make use of these techniques and participate in the theoretical developments associated with our projects. You should hold a PhD in a relevant field and have good English language skills. A solid background in quantum mechanics and prior experience in at least one of the techniques mentioned above are a plus for this position. We appreciate enthusiasm, creativity, and the ability to work well with others. Interested candidates should send Alex (alexander.grimm@psi.ch) a CV and briefly describe why you would like to work with us.
Scientific Highlights and News
March 2023
New group member
Welcome to Preeti Pandey who is joining us as a postdoctoral researcher!
February 2023
Congratulations to Tristan Kuttner for successfully completing his Master thesis!
December 2022
New group member
Welcome to Venus Hasanuzzaman Kamrul!
November 2022
New group members
Welcome to the new group members Laurent Michaud, Frederik Schnebel, and Alexander Rommens!
September 2022
Alex wins 2022 Nicholas Kurti prize
We are happy to announce that Alex has been awarded the 2022 Nicholas Kurti Science prize. The prize recognises his work on non-linear effects in Josephson junctions for quantum information processing.
The objective of the Nicholas Kurti Science Prize is to promote and recognise the novel work of young scientists working in the fields of low temperatures and/or high magnetic fields in Europe. Read the full press release and interview here and here.
Goodbye to Emre
Emre Vardar has finished his internship with us. Thank you Emre and we wish you all the best for your future!
July 2022
New group!
The BoQui group is starting its journey! Thank you to the QPS group for their support over the past years. Welcome to the "new" group members Alexander Grimm, Francesco Adinolfi, Alessandro Bruno, Tristan Kuttner, and Emre Vardar.
January 2022
ERC Starting grant
Alex has received the ERC Starting grant! Read more about it here: millions in funding for brain and quantum research and here.