Publications

Nature Physics paper highlights IQIM collaboration “Electronic correlations in twisted bilayer graphene near the magic angle”

An August 5 Nature Physics paper describes work by the Nadj-Perge group and IQIM theorists, Electronic correlations in twisted bilayer graphene near the magic angle. A scanning tunneling microscopy topographic image of twisted bilayer graphene, Credit S. Nadj-Perge “Twisted bilayer graphene with a twist angle of around 1.1° features a pair of isolated [...]

2019-08-12T11:09:51-07:00August 12th, 2019|News, Publications|0 Comments

Beyond Smoke and Mirrors: “Magic Cavity” in Superconducting Quantum Circuits

In 1946, Edward M. Purcell proposed that the way an atom emits radiation is not the sole property of the atom itself, but rather can be strongly modified by the electromagnetic environment the atom is placed within.  Purcell’s particular interest was in how the intrinsic magnetic moment (spin) of atomic nuclei in solids and liquids [...]

2019-05-28T09:31:29-07:00May 28th, 2019|News, Publications|0 Comments

Dimensional crossover in a layered ferromagnet detected by spin correlation driven distortions – new paper by the Hsieh group

Magneto-elastic distortions are commonly detected across magnetic long-range ordering (LRO) transitions. In principle, they are also induced by the magnetic short-range ordering (SRO) that precedes a LRO transition, which contains information about short-range correlations and energetics that are essential for understanding how LRO is established. However these distortions are difficult to resolve because the associated [...]

2019-05-22T14:10:32-07:00May 22nd, 2019|News, Publications|0 Comments

Endres & Painter groups collaborate on Telecom-Band Quantum Optics with Ytterbium Atoms and Silicon Nanophotonics

This new publication by members of the Endres and Painter groups is an Editors’ Suggestion in Physical Review, Applied. Wavelengths in the telecommunication window (ca.1.25–1.65 μm) are ideal for quantum communication, due to the low transmission loss in optical-fiber networks. To realize quantum networks operating at these wavelengths, we need long-lived quantum memories that couple efficiently [...]

2019-04-04T12:24:16-07:00April 4th, 2019|News, Publications|1 Comment

Many-particle quantum phenomena enhance engine

A recent paper by IQIM alum Nicole Yunger Halpern, Graduate Student Christopher David White, Burke Institute Alum Sarang Gopalakishnan and Gil Refael explores the possibility of applying quantum many-body localization to energy-processing technologies, such as an engine. Quantum engine based on many-body localization, Phys. Rev. B 99, 024203 – Published 22 January 2019 Many-particle quantum [...]

2019-01-23T16:19:27-07:00January 23rd, 2019|News, Publications|0 Comments

New paper by Motrunich group on OTOCs

A new paper by the Motrunich group studies out-of-time-ordered correlators (OTOCs) in hard-core boson models with short-range and long-range hopping and compares the results to the OTOCs in the Luttinger-liquid model. FIG. 2. from the paper - The overall picture of CXX(, t) calculated in (a) model Iand (b) model II, with L = [...]

2018-11-29T14:12:01-07:00November 29th, 2018|News, Publications|0 Comments

New work by Painter group “Superconducting metamaterials for waveguide QED”

A new paper in Nature Communications by members of the Painter group presents their recent work to couple a transmon qubit to a superconducting metamaterial.  Mohammad Mihosseini, Eunjong Kim, Vinicius S. Ferreira, Mahmoud Kalaee, Alp Sipahigil, Andrew J. Keller, Oskar Painter (2018) Superconducting metamaterials for waveguide quantum electrodynamics. Nature Communications, 9 . Art. No. 3706. More about [...]

2018-11-19T16:45:44-07:00September 27th, 2018|Publications|0 Comments

New paper by Jochym-O’Connor, Kubica and Yoder – Disjointness of Stabilizer Codes

Stabilizer codes are among the most successful quantum error-correcting codes, yet they have important limitations on their ability to fault tolerantly compute. In a recent paper by Sherman Fairchild Postdoctoral Scholar Tomas Jochym-O'Connor, IQIM alum Alex Kubica and Theodore Yoder introduce a new quantity, the disjointness of the stabilizer code, which, roughly speaking, is the [...]

2018-06-13T12:08:25-07:00June 13th, 2018|News, Publications|0 Comments

Thermodynamics of computing: New article by Philippe Faist and Renato Renner

Computers need energy to operate: Have you ever noticed that when rendering graphics or performing other computationally expensive tasks, your laptop heats up and drains its battery? Even though technological improvements have greatly increased the energy efficiency of computer components over the years while making them ever faster, heat dissipation remains one of the major [...]

2018-04-11T11:43:29-07:00April 11th, 2018|News, Publications|0 Comments

Quasiprobability behind the out-of-time-ordered correlator, new paper by Yunger Halpern, Swingle and Dressel

A new paper by Nicole Yunger Halpern, Brian Swingle and Justin Dressel combines the out-of-time-ordered correlator (OTOC) and the Kirkwood-Dirac (KD) quasiprobability. Quantum circuit for inferring the coarse-grained OTOC quasiprobability A from weak measurements. [Fig. 3] Two topics, evolving rapidly in separate fields, were combined recently: the out-of-time-ordered correlator (OTOC) signals quantum-information scrambling in [...]

2018-04-12T11:39:08-07:00April 11th, 2018|News, Publications|0 Comments