In the realm of data-crunching, a revolution is brewing. We are on the brink of transcending the perceived limitations of 'classical' computing and entering into a brave new world of quantum computing, a world where individual particles can exist in multiple states simultaneously. But what is this quantum computing? Who conceived this quantum leap forward and what does it signify for humanity? This piece aims to investigate these questions.

Deciphering Quantum Computing:

Quantum computing, in its most simplistic terms, is a type of computing architecture that leverages quantum mechanics - physical phenomena occuring at the atomic and subatomic levels - to process data. Where classical computers use bits, units of information that can exist in one of two states – 0 or 1 – quantum computers use quantum bits or "qubits." These qubits can exist in 0 and 1 states simultaneously, thanks to a marvel of quantum mechanics known as superposition. This dual existence allows quantum computers to process vast amounts of data faster than classical computers. Furthermore, due to another quantum property known as entanglement, qubits can be intertwined, meaning the state of one can instantly influence the state of another, regardless of distance, leading to faster information processing.

The Minds Behind Quantum Computing:

The conceptual birth of quantum computing traces back to 1981 when physicist Richard Feynman, during his keynote speech at the First Conference on the Physics of Computation held at MIT, impossed a challenge - simulating quantum physics on a classical computer. Building on Feynman's provocative idea, David Deutsch, a physicist at the University of Oxford, proposed the first universal quantum computer in 1985. Since then, many great minds have contributed to the evolution of quantum computing, including Peter Shor and Lov Grover, who developed crucial algorithms for this burgeoning field.

Significance to Humanity:

Quantum computing carries profound implications for humanity. Its computational capabilities could revolutionize fields across the spectrum, from medicine to finance to artificial intelligence. Quantum computers could help simulate intricate biological processes, leading to monumental breakthroughs in drug discovery. They could also optimize financial models, improving market analysis and risk management. Additionally, quantum computing could significantly enhance machine learning algorithms, galvanizing advancements in artificial intelligence.

The Speed Factor:

The stupendous speed of quantum computers arises from their ability to exist in multiple states simultaneously and influence each other instantly. This lets quantum computers process large amounts of data more efficiently than classical computers. For instance, while a standard computer would take thousands of years to break a secure encryption, a well-designed quantum computer could do it in seconds.

Impact on Society:

The societal impact of quantum computing is likely to be monumental. It could render current encryption methods obsolete, requiring the redesign of cybersecurity systems worldwide. Additionally, it could lead to significant advancements in machine learning leading to smarter AI systems. However, it also raises privacy and ethical concerns that society will need to address.

Quantum Physics Underpinning Quantum Computing:

Quantum computing owes its disruptive potential to the bizarre world of quantum physics. Quantum superposition allows qubits to exist in multiple states at once, and quantum entanglement enables them to interact instantaneously, no matter their separation. These two phenomena form the backbone of quantum computing.

Conclusion

Can we brace ourselves for a world where the impossible becomes possible, and where particles exist in several places at once, challenging our basic understanding of reality? Quantum computing promises such an era. Its potential is enormous, from revolutionizing medical research to shattering cybersecurity protocols. Yet, with such promise comes potent risks. As we stand at this technological precipice, the real question becomes; are we ready to accept and responsible enough to manage the power of such an awe-inspiring advancement in technology?