• Aiming at developing practical quantum optimization technology known as quantum annealing, we are working on exploring basic technologies that can overcome the limitations and applications in collaboration with multiple companies. The advantage of the method is that it can be used simply by formulating a cost function that draws the goal to be optimized once, but we are not limited to the original method. We extend it by considering a much easier problem, sequential optimization by learning, black box optimization, etc.. In particular, it is being applied to automated driving, logistics in factories, and evacuation guidance during disasters.

Applications to route search problems such as automatic driving of various vehicles, evacuation route guidance at the time of disaster, process scheduling and a large number of combination problems. We can provide a solution to combinatorial optimization in each industry. (Transportation / distribution, manufacturing, materials, drug discovery, etc.)

• Spintronics is a technology utilizing electron spin which provided magnetic sensor, nonvolatile magnetic memory, and so on. Our studies are as below.
• Noble & Rare-earth free magnetic films with large perpendicular magnetic anisotropy. We achieved to develop various Mn-bases alloy films exhibiting high perpendicular magnetic anisotropy (Fig.1 ).
• THz range observation of magnetization motion. We achieved to detect a motion of magnetization using pulse laser in time domain (Fig. 2).
• Novel organic spin devices. We achieved to fabricate hybrid junction consisting of an organic layer sandwiched by two inorganic magnetic layers and to observe magnetoresistance effect.
• Tunnel Magnetoresistive devices: We are developing TMR devices with Mn-Ga alloys films (Fig.3 ).

Magnetic memory and storage. Microwave and Terahertz wave. Magnetic sensors.
We hope to conduct collaborative research with a willing company for a practical application of these devices and materials in industry.

• Since spin orbit interactions caused by the structural inversion asymmetry and the bulk inversion asymmetry induce an effective magnetic field in III-Vsemiconductor heterostructures, it is possible to realize the new functional devices based on the electrical control of the spin precession. We study the electrical spin generation by using spatial modulation of spin orbit interaction, which demonstrates Stern-Gerlach spin filter in semiconductors, and research ultra-fast spin dynamics by using time resolved Kerr rotation microscopy. We also investigate a spin MOSFET based on the perpendicular magnetic materials and electric-field induced magnetization control. We can reduce the leak current and the signal delay in the logic circuit. With the non-volatility of the ferromagnetic source and drain electrodes, random access memory is also enabled by using the spin MOSFET structure.

Target application will be low power logic devices and non-volatile memory based on electron spins and also future metal-based spintronic devices.

• In recent year, facing the age of nanoscale engineering, the new technologies of device, circuit and architecture supported by novel physical guidance principles are highly expected, just as the similar situation as the predawn of semiconductor technology when Bardeen and Shockley discovered the secret of transistors. Therefore, in our research approach, the architectures, circuits, devices and CAD design tools for nanoscale LSI are systematically investigated in the following three main research subjects.
• 1. Study on nanoscale device and circuit
• Aiming at the nanoscale silicon semiconductor integrated circuit, we are mainly working on the following directions for new devices and circuits:
• ①Analysis for novel physical phenomenon based on nanostructural effects
• ②Device and circuit technology with new operating principle
• ③Restraint technology for increasing variability of device characteristics
• ④Architecture and circuit technology for robust information processing
• 2. Study on the 3-dimention-structual device and circuit
• The elementary element of recent LSI with planar-structural devices is coming close to the physical limitation of scaling. In order to break the limit and sustain the evolution of future LSI performance, we have started the research on the novel 3-dimension-structural devices and circuits.
• 3. research on wireless integrated circuit (IC) based on information transmission
• The ultracompact lightweight wireless IC is one of essential technologies for realizing the ubiquitous society which has the network available in anywhere, at anytime and from any surrounding items. For example, the IC tags for receiving information with reading function are getting close to the practical applications. In our laboratory, aiming at the automatic operating wireless IC with embedded power supply, we are systematically working on the following directions:
• ①The electrical power generation and storage devices
• ②Devices and circuits with Ultralow power consumption
• ③Sensing devices
• For all above subjects, We hope to conduct collaborative researches with companies interested in our research.

• Spintronics is a technology utilizing electron spin which provided magnetic sensor, nonvolatile magnetic memory, and so on. Our studies are as below.
• Noble & Rare-earth free magnetic films with large perpendicular magnetic anisotropy. We achieved to develop various Mn-bases alloy films exhibiting high perpendicular magnetic anisotropy (Fig.1 ).
• THz range observation of magnetization motion. We achieved to detect a motion of magnetization using pulse laser in time domain (Fig. 2).
• Novel organic spin devices. We achieved to fabricate hybrid junction consisting of an organic layer sandwiched by two inorganic magnetic layers and to observe magnetoresistance effect.
• Tunnel Magnetoresistive devices: We are developing TMR devices with Mn-Ga alloys films (Fig.3 ).

Magnetic memory and storage. Microwave and Terahertz wave. Magnetic sensors.
We hope to conduct collaborative research with a willing company for a practical application of these devices and materials in industry.

• To realize ultralow-power and high-performance integrated circuit and information processing, spintronics physics, material, devices are studied.

• Aiming at developing practical quantum optimization technology known as quantum annealing, we are working on exploring basic technologies that can overcome the limitations and applications in collaboration with multiple companies. The advantage of the method is that it can be used simply by formulating a cost function that draws the goal to be optimized once, but we are not limited to the original method. We extend it by considering a much easier problem, sequential optimization by learning, black box optimization, etc.. In particular, it is being applied to automated driving, logistics in factories, and evacuation guidance during disasters.

Applications to route search problems such as automatic driving of various vehicles, evacuation route guidance at the time of disaster, process scheduling and a large number of combination problems. We can provide a solution to combinatorial optimization in each industry. (Transportation / distribution, manufacturing, materials, drug discovery, etc.)

• We have proposed advanced methods of behavior analysis for public transport service.
• They include a demand composition based on the automatically mesured traffic data, estimation of true demand partly unrealized by the congestion, and intense usage of geographical data. These methods may be applicable for behavior analysis besides transport service.

We welcome cooperative research on demand analysis of public services, as well as needs analysis for new goods and services.