Abstract: A circuit for transferring charge, which may be in the form of charged particles from a first storage element to one of a plurality of second storage elements, the circuit comprising a circuit element configured to receive the charge or charged particles and deliver the charge or charged particles to an identified one of the plurality of second storage elements. The charge delivered may be the same charged particles or other charged particles. The circuit may be used for embodying Boolean circuits or gates operable at cryo temperatures.

Abstract: 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.

Abstract: 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.

Abstract: An assembly comprising a qubit and a method of altering a qubit, where a presence of a charge in a storage element close to the qubit influences on the state in which the altering is performed. Then, altering may be performed by feeding signals to electrodes, where the same signal is fed to the qubit but where the state is altered only if the charge is present in the storage element. Multiple qubits may then receive the same signal and only the ones with a charge are altered by the signal.

Abstract: A circuit for transferring charge, which may be in the form of charged particles from a first storage element to one of a plurality of second storage elements, the circuit comprising a circuit element configured to receive the charge or charged particles and deliver the charge or charged particles to an identified one of the plurality of second storage elements. The charge delivered may be the same charged particles or other charged particles. The circuit may be used for embodying Boolean circuits or gates operable at cryo temperatures.

Abstract: A sensor for a cryogenic operated device, the set-up comprising dual quantum dots positioned so close to a conductor supplying an electrical signal to the device. A charged particle in the quantum dots is affected and moved due to the field, so that detection of the position of the particle will provide information relating to the field and thus the signal.

Abstract: A system for determining information relating to a first periodic signal, the system comprising a sequence of storage elements each configured to store at least one charged particle, where a signal with a constant voltage and a signal with a varying voltage is fed to each storage element. One of the signals with the varying voltage is the first periodic signal. By monitoring the current pumped between the storage elements by the voltages applied to the storage elements, the information relating to the first periodic signal may be generated.

Abstract: 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.

Abstract: 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.