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Konrad Lehnert

Content About: Konrad Lehnert

Published: 09/18/2017 - 9:15am Type of Content: Article-Research Highlight

Quantum computers require systems that can encode, manipulate, and transmit quantum bits, or qubits. A creative way to accomplish all this was recently demonstrated by Adam Reed and his colleagues in the Lehnert group. The researchers converted propagating qubits (encoded as superpositions1 of zero and one microwave photons) into the motion of a tiny aluminum drum. The successful conversion is...

Published: 04/21/2017 - 8:19am Type of Content: Article-Research Highlight

The Regal group recently met the challenge of measurements in an extreme situation with a device called an interferometer. The researchers succeeded by using creative alterations to the device itself and quantum correlations. Quantum correlations are unique, and often counterintuitive, quantum mechanical interactions that occur among quantum objects such as photons and atoms. The group...

Published: 03/30/2017 - 7:57am Type of Content: Article-Research Highlight

The first results are in from a new search for the axion, a hypothetical particle that may constitute dark matter. Researchers in the Haloscope At Yale Sensitive to Axion Cold Dark Matter (HAYSTAC) recently looked for evidence of the axion, but so far they have found none in the small 100 MHz frequency range between 5.7 and 5.8 GHz.

The experiment relied on the Lehnert group’s microwave...

Published: 08/30/2016 - 12:00pm Type of Content: News

Fellows Cindy Regal and Konrad Lehnert have won the 2016 Governor’s Award for High-Impact Research in Foundational Science and Technology, CO-LABS announced today. JILA Chair Dana Anderson submitted the nomination of their joint research on building, studying, and using devices that exploit the strange and powerful properties of quantum mechanics. The nomination was entitled, The JILA Quantum...

Published: 07/20/2016 - 9:27am Type of Content: Article-Research Highlight

Bob Peterson and his colleagues in the Lehnert-Regal lab recently set out to try something that had never been done before: use laser cooling to systematically reduce the temperature of a tiny drum made of silicon nitride as low as allowed by the laws of quantum mechanics. Although laser cooling has become commonplace for atoms, researchers have only recently used lasers to cool tiny silicon...

Published: 11/30/2015 - 7:53am Type of Content: Article-Research Highlight

In the future, quantum microwave networks may handle quantum information transfer via optical fibers or microwave cables. The evolution of a quantum microwave network will rely on innovative microwave circuits currently being developed and characterized by the Lehnert group. Applications for this innovative technology could one day include quantum computing, converters that transform microwave...

Published: 03/19/2014 - 2:27pm Type of Content: Article-Research Highlight

The Regal-Lehnert collaboration has just taken a significant step towards the goal of one day building a quantum information network. Large-scale fiber-optic networks capable of preserving fragile quantum states (which encode information) will be necessary to realize the benefits of superfast quantum computing. Such networks will require new technology to reversibly convert low-frequency...

Published: 12/12/2013 - 1:53pm Type of Content: News

Konrad Lehnert has been named a Fellow of the American Physical Society! Lehnert was elected “for developing experimental methods that enable the quantum control and measurement of micro-mechanical oscillators and for developing practical microwave amplifiers that operate at the quantum limit.”

Published: 10/04/2013 - 7:39am Type of Content: Article-Research Highlight

Tauno Palomaki and his colleagues in the Lehnert group have just gone where no one has gone before: They’ve entangled the quantum motion of a vibrating drum with the quantum state of a moving electrical pulse. What’s more, they figured out how to store half of this novel entangled state in the drum (which is tiny compared to a musical drum, but huge compared to the atoms or molecules normally...

Published: 03/21/2013 - 9:48am Type of Content: Article-Research Highlight

The Lehnert group has come up with a clever way to transport and store quantum information. Research associate Tauno Palomaki, graduate student Jennifer Harlow, NIST colleagues Jon Teufel and Ray Simmonds, and Fellow Konrad Lehnert have encoded a quantum state onto an electric circuit and figured out how to transport the information from the circuit into a tiny mechanical drum, where is stored...

Published: 02/22/2012 - 5:00pm Type of Content: Article-Research Highlight

Fellows Konrad Lehnert and Cindy Regal are collaborating on an ambitious undertaking to explore the quantum behavior of tiny mechanical systems that are large enough to be visible to the naked eye (as opposed to systems exhibiting quantum behavior that are no bigger than a few tens of atoms). At the same time, they have been looking for ways to prolong vibrations in mechanical objects such as...

Published: 05/31/2011 - 6:00pm Type of Content: Article-Research Highlight

The Lehnert group and collaborators from the National Institute of Standards and Technology (NIST) recently made what was essentially a CT scan of the quantum state of a microwave field. The researchers made 100 measurements at different angles of this quantum state as it was wiggling around. Because they only viewed the quantum state from one angle at a time, they were able to circumvent...

Published: 04/08/2010 - 6:00pm Type of Content: Article-Research Highlight

Fellows Deborah Jin, Jun Ye, and John Bohn are exploring new scientific territory in cold-molecule chemistry. Experimentalists Jin and Ye and their colleagues can now manipulate, observe, and control ultralow-temperature potassium-rubidium (KRb) molecules in their lowest quantum-mechanical state. Theorist Bohn analyzes what the experimentalists see and predicts molecule behaviors under...

Published: 02/09/2010 - 5:00pm Type of Content: Article-Research Highlight

Not content with stepping on their bathroom scales each morning to watch the arrow spin round to find their weights, former research associate John Teufel and Fellow Konrad Lehnert decided to build a nifty system that could measure more diminutive forces of half an attoNewton (0.5 x 10-18 N). Their new system consists of a tiny oscillating mechanical wire embedded in a microwave cavity with an...

Published: 09/29/2008 - 6:00pm Type of Content: Article-Research Highlight

Fellow Konrad Lehnert needed a virtually noiseless amplifier to help with his experiments on nanoscale structures, so he invented one. Working with graduate student Manuel Castellanos-Beltran and NIST scientists Kent Irwin, Gene Hilton, and Leila Vale, he conceived a tunable device that operates in frequencies ranging from 4 to 8 GHz. This device has the lowest system noise ever measured for...

Published: 07/08/2008 - 6:00pm Type of Content: Article-Research Highlight

Nanoartisans Cindy Regal, John Teufel, and Konrad Lehnert have come up with a clever new way to observe ordinary (very small) things behaving quantum mechanically. They’ve tucked a nanomechanical beam (which is actually a really thin aluminum wire) inside a tiny resonant microwave cavity made of lightweight superconducting aluminum. This design ensures that very small forces will cause...

Published: 02/09/2007 - 5:00pm Type of Content: Article-Research Highlight

A key challenge in developing new nanotechnologies is figuring out a fast, low-noise technique for translating small mechanical motions into reasonable electronic signals. Solving this problem will one day make it possible to build electronic signal processing devices that are much more compact than their purely electronic counterparts. Much sooner, it will enable the design of advanced...

Published: 03/18/2013 - 1:59pm Type of Content: Biblio
Published: 06/05/2013 - 2:36pm Type of Content: Biblio
Published: 09/18/2017 - 9:06am Type of Content: Biblio
Published: 12/17/2013 - 9:20am Type of Content: Awards
Published: 08/21/2014 - 2:23pm Type of Content: Biblio
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Published: 04/21/2017 - 8:15am Type of Content: Biblio
Published: 03/23/2014 - 2:02pm Type of Content: Biblio
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Published: 06/30/2016 - 9:06am Type of Content: Biblio
Published: 03/18/2013 - 2:00pm Type of Content: Biblio
Published: 10/04/2013 - 7:33am Type of Content: Biblio
Published: 03/18/2013 - 2:00pm Type of Content: Biblio
Published: 03/18/2013 - 1:59pm Type of Content: Biblio
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Published: 04/27/2016 - 10:31am Type of Content: People - Visiting Fellows
Published: 03/18/2013 - 2:00pm Type of Content: Biblio
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Published: 04/26/2016 - 4:37pm Type of Content: People - Visiting Fellows
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Published: 11/10/2015 - 1:52pm Type of Content: Biblio
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Published: 02/16/2017 - 1:49pm Type of Content: Biblio
Published: 03/18/2013 - 2:00pm Type of Content: Biblio
Published: 04/27/2016 - 10:52am Type of Content: People - Visiting Fellows
Published: 03/18/2013 - 2:00pm Type of Content: Biblio
Published: 04/06/2016 - 8:51am Type of Content: Biblio
Published: 03/18/2013 - 1:59pm Type of Content: Biblio
Published: 08/15/2013 - 3:15pm Type of Content: Biblio
Published: 04/27/2016 - 10:05am Type of Content: People - Visiting Fellows
Published: 04/06/2016 - 8:21am Type of Content: Biblio
Published: 09/29/2005 - 6:00pm Type of Content: Article-Research Highlight

The race is on! Two mice chase one another around a curvy, roughly elliptical white stripe. But, the goal can't be the finish line – because there isn't one. Rather, the contest seems to be: Which mouse will stay on track for the longest time before spinning out of control? Of the two, one clearly "wags its tail" less as its phototransistor eyes guide it along the...

Published: 03/18/2013 - 1:59pm Type of Content: Biblio
Published: 08/15/2013 - 3:11pm Type of Content: Biblio
Published: 10/18/2012 - 3:03pm Type of Content: People - Faculty & Research Groups
Published: 03/18/2013 - 2:00pm Type of Content: Biblio
Published: 11/30/2015 - 7:49am Type of Content: Biblio
Published: 03/18/2013 - 1:59pm Type of Content: Biblio
Published: 06/07/2013 - 9:54am Type of Content: Biblio
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Published: 07/20/2015 - 2:34pm Type of Content: Biblio