# engage Quantum

#### Abacus

#### Mechanical Calculators

#### Babbage: Analytical Engine

#### Boolean Algebra

#### Quantum Mechanics

#### Turing Machine

#### Von Neumann Architecture

#### Zuse Z4, Eniac, Univac

#### Transistor

#### Ion Trap

#### Programming Languages

#### Integrated Circuits

#### Operating Systems

#### Laser Cooling

#### Apple II, IBM PC

#### Observation of the first single ion

#### The Concept of Quantum Computing

#### WWW

#### CNOT-Gate

#### MAGIC

#### Nobel Prize for Serge Haroche and David Wineland

#### eleQtron is founded

#### First industrial applications

#### Scalable Quantum Computer

## Capabilities and Applications

Quantum Computers can solve mathematical problems which conventional computers cannot tackle.

The smallest computational unit of a Quantum Computer, just as a Bit is the smallest unit of a conentional computer. A qubit, however, can take the values 0 and 1 — at the same time.

The bits of a conventional computers take the values 1 or 0 — this is the basis for calculations. The Quantum Computer can take combinations (‘Superpositions’) of 1 and 0. This means that a parallel calculation on different inputs is possible. Several solutions can be tried out at the same time, so to speak.

There are working Quantum Computers with some dozens of qubits, and they can solve special test problems which would take classical computers much longer. Until, however, a freely programmable Quantum Computer is relevant for industrial applications, many problems will have to be solved. In particular the quality of the gate operations — the simplest steps of the calculation — has to be increased drastically.

No! Special problems of commercial and scientific relevance can be attacked by so-called NISQs (Noisy Intermediate-Scale Quantum Computers). These are computers with limited qubit number and gate fidelity. The development of NISQs with relevant calculation power is ongoing, and als permits the technology improvement which will be necessary for universal quantum computers.

Problems in basic research, like the simulation of large quantum systems; but also problems from finance, chemistry and logistics