We are aiming to obtain silicon nanostructures that can emit strong light at room temperature and are developing the new scanning probe microscopy (SPM) that can detect near-field and far-filed light emitted from the individual nanostructures. The work is to fabricate silicon nanostructures using silicon nanotechnologies and to characterize them by the original light emission SPM in order to reveal light emission mechanisms.

Diamond is expected to exhibit excellent performance as a high-power RF transistor. NTT is focusing on the CVD growth, doping, and characterization of diamond thin film with a view to achieving a high-power RF transistor. The candidate must have significant experience in the crystal growth and characterization of semiconductors, and an understanding of solid-state physics.

Single-electron devices are promising for future current-standard and digital circuits. This project will study the transport properties of silicon-based single-electron devices including single-electron transistors and pumps with the aim of the ultimate control of elemental charges. The candidate must be experienced in transport measurement.

The theme is to investigate material properties and process physics in relation to nanodevice fabrication by using computer-physics methods (mainly, first principles calculations). The work will cover the electronic properties of silicon nanostructures, the thermal oxidation of silicon, the properties of carbon-based materials and their interface and surface physics for nanodevice fabrication and processes.

Nanocarbon materials, such as carbon nanotubes and graphene, are promising candidates for next generation nanoelectronics/photonics applications because of their particular physical properties derived from their low-dimensional structures. Structure control is the most crucial issue as regards the practical use of nanocarbon materials. In this research, the nanocarbon material formation process will be investigated based on surface structure control. Wide and pertinent experience in nanocarbon synthesis, semiconductor crystal growth, surface science in UHV and transport measurements is desired.

In order to understand the mechanism of information processing in brain, especially signal transduction, a multi planar electrode array will be applied in vivo and in vitro to establish long-term access to the neural system. In this study, we hope to find the way to realize an interface between neurons and electrical devices including computers for behavior control.

The conformation of receptor proteins such as neuro-receptors will be analyzed using liquid AFM. Fast scan liquid AFM allows us to observe receptor conformational change in real time. In this study, we are interested in investigating how conformational changes in a receptor affect the functions at the subunit resolution level in real time.

NTT-BRL have succeeded in manipulating the quantum state entanglement between a superconducting flux qubit and a single-mode photon resonator system. The observed vacuum Rabi frequency tells us that the strength of the interaction between a microwave photon and a superconducting qubit is a few thousand times that of the well-known atom-photon interaction. The strong coupling condition can be easily realized in a superconducting circuit. Therefore, new parameter regions that are difficult to achieve with an ordinary atom/molecule system can be opened up with circuit-QEDs using a superconducting qubit. In this project, we will attempt to manipulate the entanglement and quantum noise of a superconducting quantum circuit, generate a squeezed state and coupling with a nanomechanical resonator etc., to achieve the coherent control of several superconducting qubits. We need highly motivated people who are interested in this theme. Experience in dilution refrigerator operation is an advantage.

New quantum phenomena can be expected from the coexistence of and competition between superconductivity and ferromagnetism. We have been investigating the superconducting properties of superconductor/semiconductor junctions exposed to circularly polarized light and superconductor/ferromagnetic metal (semiconductor) junctions by using electrical and/or optical methods. Candidates must have a knowledge of superconductor/ferromagnet hybrid systems and/or optical measurement at low temperatures.

An optical frequency comb is useful for various applications such as metrology, precision spectroscopy, telecommunications. The aim of this theme is to develop a wide mode spacing optical frequency comb at telecommunications wavelength region. Arbitrary optical pulse shaping with optical frequency comb and their applications to coherent control of materials are also promoted.

The purpose of our study is to explore new functionalities using both spin and charge in semiconductors. We are looking for postdoctoral researchers who wish to study transport in semiconductor/ferromagnet hybrid structures with a view to realizing spin FET. The candidates must have a knowledge of ferromagnet/semiconductor hybrid systems and/or nano fabrication processes.

Our aim here is to investigate techniques for fabricating three-dimensional (3D) nanostructures using electron-beam lithography. The targets are the development of 3D nanofabrication technology with a high degree of freedom and the creation of nanodevices with 3D structures.