University of Copenhagen

Harvard College

Qm Technologies Aps

Ferdinand Kuemmeth

Peter Ulrik Kann

Jonatan Kutchinsky

Charles M Marcus

Peter Krogstrup

Thomas Sand Jespersen

Jesper Nygård

Karl Petersson

Thorvald Larsen

Anders Kuhle

Martin Skjodt

Merlin Von Soosten

Charles Masamed Marcus

Jesper Nygard

Jesper NYGÅRD

Anders Kühle

Martin Skjødt

A multi-channel filter with a PCB with a first side with signalling tracks and shielding tracks between neighbouring signalling tracks. On the second side, a conductive layer is provided. The signalling tracks are covered by an electromagnetically absorbing material, such as a powder of an electrically conducting material is provided. The filter may have sections with reversed structure where the conductors are on the second side and the layer on the first side, where the conductors on opposite sides are interconnected. The filter may be rolled or folded.

Multi-channel filter comprising plural elongate signal tracks covered by electromagnetically absorbing material and the signal tracks are separated by elongate shielding tracks

A filter comprising a flexible PCB with one or more signal tracks on one side. A electromagnetically absorbing material covers the signal tracks. An insulating material may be provided between the signal tracks and the electromagnetically absorbing material. The PCB is then folded or rolled to take up less space. The PCB may be first folded and then rolled to have both ends of the signal tracks available at the outer portion of the roll.

Rolled or folded filter comprising a flexible printed circuit board having first elongate signal tracks covered by an electromagnetically absorbing material

The present disclosure relates to semiconductor based Josephson junctions and their applications within the field of quantum computing, in particular a tuneable Josephson junction device has been used to construct a gateable transmon qubit. One embodiment relates to a Josephson junction comprising an elongated hybrid nanostructure comprising superconductor and semiconductor materials and a weak link, wherein the weak link is formed by a semiconductor segment of the elongated hybrid nanostructure wherein the superconductor material has been removed to provide a semiconductor weak link.

Semiconductor Josephson junction and a transmon qubit related thereto

Semiconductor josephson junction and a transmon qubit related thereto

A device is disclosed to reduce noise and temperature during measurements in cryostats comprising, the device comprising any of, or a combination of, the following PC boards, each conditioning a different frequency range: a RC-PC board having a two-stage RC filter in series with a surface-mounted pi-filter; a RF-PC board having a plurality of surface-mounted pi-filters in series, each configured with different low-frequency cutoff frequencies; and a Sapphire-PC board having a sapphire substrate having high heat conductivity at low temperature with thin metal films routed in a meandering fashion.

Reducing noise and temperature during measurements in cryostats

Growing community of inventors

Copenhagen, Denmark

Ferdinand Kuemmeth