PostDoc at QNS – Project: “Spins on Insulators”
Research-Topic: Quantum coherence measurement of spins on insulators
About us: The IBS Center for Quantum Nanoscience (QNS) is a basic research center located in the heart Seoul, South Korea. Our working language is English, 50% of our researchers come from outside of Korea, and 55% of our researchers are women. QNS is laying the foundation for future quantum technologies by exploring the use of quantum behavior atom by atom with highest precision. We focus on the fabrication and exploration of quantum nanostructures while aiming at achieving full control over the quantum states of the constituent atoms and molecules. QNS has become a leading center in the field of quantum-coherent nanoscience by filling our world-class facility with ground-breaking tools and inquisitive minds immersed in a culture of exploration.
About the Project: Spins on thin insulating films can be studied with STM, which requires a tunnel current to flow between tip and sample. Hence, the insulating films have to atomically thin typically between one and four layers thick. However, the key spin properties of energy relaxation time (T1) and quantum coherence time (T2) are strongly reduced through the presence of the metal electrons.
We are aiming to work with spin qubits on thick insulating films or on bulk insulators. Hence, we need a new research tool to measure individual spins. The atomic force microscope (AFM) is a cousin of the STM, which measures the force between a tip and the sample. We use a q-plus force sensor with a conducting tip. This allows us simultaneous operation of STM and AFM. In order to measure the magnetic properties of spin-qubits, we rely on the spin-dependent forces between a magnetic tip and the qubits on the insulating surface.
About us: The IBS Center for Quantum Nanoscience (QNS) is a basic research center located in the heart Seoul, South Korea. Our working language is English, 50% of our researchers come from outside of Korea, and 55% of our researchers are women. QNS is laying the foundation for future quantum technologies by exploring the use of quantum behavior atom by atom with highest precision. We focus on the fabrication and exploration of quantum nanostructures while aiming at achieving full control over the quantum states of the constituent atoms and molecules. QNS has become a leading center in the field of quantum-coherent nanoscience by filling our world-class facility with ground-breaking tools and inquisitive minds immersed in a culture of exploration.
About the Project: Spins on thin insulating films can be studied with STM, which requires a tunnel current to flow between tip and sample. Hence, the insulating films have to atomically thin typically between one and four layers thick. However, the key spin properties of energy relaxation time (T1) and quantum coherence time (T2) are strongly reduced through the presence of the metal electrons.
We are aiming to work with spin qubits on thick insulating films or on bulk insulators. Hence, we need a new research tool to measure individual spins. The atomic force microscope (AFM) is a cousin of the STM, which measures the force between a tip and the sample. We use a q-plus force sensor with a conducting tip. This allows us simultaneous operation of STM and AFM. In order to measure the magnetic properties of spin-qubits, we rely on the spin-dependent forces between a magnetic tip and the qubits on the insulating surface.
Figure 1. Spin-dependent force detection of magnetic atom on thick insulating film using AFM
Primary scientific tasks include:
Qualifications:
Employment Detail:
Applications should be sent by email to QNS HR Team (hr@qns.science) including,
in one PDF file:
1) Cover Letter
2) Brief CV
3) Contact information for two references
- Execution of experiments using a low-temperature AFM/STM for spin detection at atomic scale
- Analyze data, publish results to scientific journals and attend conferences
- Setup interesting experimental plans and active scientific discussion with team and groups in QNS
- Instrumentation for upgrade of existing systems or a new equipment to achieve experimental plans
Qualifications:
- PhD in Physics, Chemistry, or related fields
- English at professional work level
- Ambitious self-starter wanting to lead projects
- Experience with low-temperature ultra-high vacuum AFM or STM
Employment Detail:
- Salary: based on experience, inquire for more information
- Annual leave starting at 15 days per year and increasing according to Korean Labor law
- Relocation support: one-way flight and moving fee, if moving to Korea
Applications should be sent by email to QNS HR Team (hr@qns.science) including,
in one PDF file:
1) Cover Letter
2) Brief CV
3) Contact information for two references
Contact:
Benefit and salary information available. For more information please contact hr@qns.science
