<p>The stone age, the iron age, the steam and electrical ages all saw the reach of humankind transformed by new technology. Now we are living in the quantum age, a revolution in everyday life led by our understanding of the very, very small.<br><br>Quantum physics lies at the heart of every electronic device from smartphones to lasers; quantum superconductors allow levitating trains and MRI scanners, while superfast, ultra-secure quantum computer...