Quantum Technology Laboratory

We have several post-docs available in our group focusing on experimental quantum computing with superconducting qubits covering all areas of scaling our systems from coherence to control! The application deadline is April 30. @wacqt_sweden @chalmersuniv chalmers.se/en/about-chalm…

New preprint just in time for the #APSMarch meeting: arxiv.org/abs/2403.00285 With @sandokokosen, @JonasBylander2, and the experimental team @wacqt_sweden @chalmersuniv @QTL_Chalmers (and @VTTFinland through @OpenSuperQPlus), we characterize crosstalk on our quantum processors.

Mitigation of frequency collisions in superconducting quantum processors, Amr Osman et al @Amr_Osman_ @JonasBylander2 @chalmersuniv @QTL_Chalmers @wacqt_sweden @OpenSuperQ #Quantum #QuantumInformation go.aps.org/46dFKAJ

New experimental results out today with collaborators from @QTL_Chalmers! We measure the long sought-after cubic phase state that is obtained by applying the cubic Hamiltonian x³ to an initial squeezed state, by engineering the cubic gate explicitly! scirate.com/arxiv/2308.153… (1/7)

New preprint out today with @trondhjerpekjon and @RaphaelVanLaer, @wacqt_sweden @chalmersuniv: ”Quantum resource states from heralded microwave-optical Bell pairs”. arxiv.org/abs/2308.14173

✨ #OpenSuperQPlus kick off meeting in progress❗ Over 85 project members & associates are gathering at @upvehu in Bilbao 🇪🇸 for some interesting lectures & group discussions within work packages & across topics. Today we also had a poster session. 👉 opensuperqplus.eu

Our work has now been published in Nano Letters: doi.org/10.1021/acs.na… Congrats to the great fab effort!

Refrigerators are very useful. What about quantum refrigerators? Can they be useful? We built one @QTL_Chalmers that is! arxiv.org/abs/2305.16710 To our knowledge, this is the first demo of a practical quantum thermal machine.

New preprint out today with my postdoc Jorge Fernández-Pendás and the experimental group @QTL_Chalmers @chalmersuniv @wacqt_sweden @OpenSuperQPlus: ”Mitigation of frequency collisions in superconducting quantum processors”, arxiv.org/abs/2303.04663 (1/6)

Researchers at @QTL_Chalmers @wacqt_sweden demonstrate a three-wave mixing, traveling-wave parametric amplifier with near-quantum-limited noise, 20 dB gain and 1 GHz 3-dB bandwidth between 4-8 GHz to detect signals at the few-photon level. Read here! doi.org/10.1063/5.0127…

We have another successful PhD from the lab of professor @WitlefW! @sushonomics did a fantastic job today defending his work on developing a platform for investigating optomechanical couplings in III-V heterostructures!

ConScience and @QTL_Chalmers are working on scaled qubit production to 4-inch wafer to facilitate commercial adoption of quantum technologies. Here we present our first successful 4-inch Qubit wafer (proprietary designs blurred). #QuantumComputing

Available @chalmersuniv in a collaboration between @smnlssn, @rahmlab, and me, bringing together @WASP_Research and @wacqt_sweden: a postdoc position in AI-driven optimization of variational algorithms for near-term quantum computers. Deadline 10 March. chalmers.se/en/about-chalm…

2/2 modular superconducting qubit components for rapid device design Q72.3 Control-Signal Crosstalk in Flip-Chip #Superconducting Quantum #Processors @orionfigen @tudelft #AndersenLabQuTech @sandokokosen @JonasBylander2 @AndreasAtETH @wacqt_sweden ...

We have yet another successful PhD from our group! Congratulations Martí and also Proffessor @WitlefW on your first PhD student! Martí worked extensively on magnetic levitation, developing several techniques to study quantum foundations. @wacqt_sweden @chalmersuniv

Great job Anita and everyone @chalmersuniv @wacqt_sweden !

Our work developing TWPAs has received an editors pick! We demonstrate in this work 20dB of gain with a 3dB BW of 1GHz in three-wave mixing. By engineering a bandgap we suppress the generation and propagation of the 2nd harmonic and all higher harmonics aip.scitation.org/doi/10.1063/5.…