QuantERA Call 2023 Partner Search Tool

General Information

• Project title: Design of Quantum Non-classicality Enhancing Circuit Operating at 4.2 K
• Type: Project looking for partner
• Organisation: Cankaya University
• Department: Electrical Engineering
• Country: Turkey (TR)

Research area

• Call topics:
  • Applied Quantum Science
• Keywords:

  Quantum correlation cryogenic microwave circuit design quantum sensor quantum readout circuit design

• Brief description of your expertise / expertise you are looking for:

  quantum sensor designer cryogenic microwave circuit designer, quantum readout circuit designer

• Brief description of your project / the project you would like to join:

  Quantum correlation is a critical phenomenon in some applications such as quantum sensors and quantum computers. Since the mentioned quantum property is a fragile phenomenon and can be easily broken down, it is necessary to preserve or enhance it. The issue becomes crucial in interface cryogenic electronics between the sub-cryogenic area at which the entangled microwave photon is created and the room temperature area where signal processing is carried out on the signals. The main problem is arisen due to the thermal mismatching between the sub-cryogenic (< 10 mK) and cryogenic (~4.2 K) areas. Thus, the thermal photons generated destroy the quantum correlation created at the sub-cryogenic area. To enhance this phenomenon, for the first time, a device called QNC (Quantum Non-classicality enhancing Circuit) is designed and placed at the first stage in the interface electronics (more especially receiver) before the LNA (low noise amplifier) to enhance and improve the quantum correlation. This point becomes evaluated using quantum discord calculation. The first option to implement QNC is the HEMT because of its cryogenic and very low noise behavior. The QNC operates at 4.2 K and should be designed in such a way as to keep the noise at a very low level of approximately 0.01 dB or lower. The nonlinearity of HEMT used in QNC makes it possible to generate non-classicality by minimizing the noise figure in QNC. In other words, the design is established so that the QNC operates in the squeezing state by which the noise fluctuation is limited below the zero-point. It is an excellent step toward enhancing and preserving the quantum properties of entangled microwave signals. In this design, effects such as HEMT circuitry and matching circuits can be engineered so that QNC operates as a resistor mixer. This novel idea causes to generate the quantum correlation at zero-IF, which can be a suitable RF band for sampling and post-processing.

Ahmad Salmanogli

• Organisation: Cankaya University
• Position: Prof. Assistant
• E-mail: salmanogli@cankaya.edu.tr
• Phone: +905459588480
• Web: quantum-rf.cankaya.edu.tr/members/